Words that start with O
Orthographic
Orthographic refers to the correct spelling and arrangement of words i...
Orthographic projection
Orthographic projection is a method of representing a three-dimensiona...
Orthographize
To orthographize means to spell or write correctly....
Orthography
The meaning of orthography is the correct way of writing and spelling ...
Orthohydrogen
Orthohydrogen refers to a form of hydrogen gas in which the hydrogen n...
Orthokeratology
Orthokeratology is a non-surgical treatment to correct vision by resha...
Orthomolecular
Orthomolecular refers to a medical approach that focuses on providing ...
Orthomorphic
Orthomorphic means conforming to a straight or regular form....
Orthomorphic projection
Orthomorphic projection is a map that accurately represents shapes and...
Orthonormal
Orthonormal vectors are a set of mutually perpendicular vectors with a...
Orthopaedic
Orthopaedic refers to the branch of medicine that focuses on the muscu...
Orthopaedics
Orthopaedics is a branch of medicine that focuses on the musculoskelet...
Orthopedic
Orthopedic refers to the branch of medicine specializing in the treatm...
Orthopedics
Orthopedics is a medical specialty focused on the diagnosis , treatme...
Orthophosphate
Orthophosphate is a primary form of phosphate that is essential for pl...
Orthophosphoric acid
Orthophosphoric acid, also known as phosphoric acid, is a mineral acid...
Orthophosphorous acid
Orthophosphorous acid is a phosphoric acid related compound used in va...
Orthophthalic acid
Orthophthalic acid is an acid commonly used in the production of polye...
Orthophyric
Orthophyric refers to a rock texture characterized by straight alignme...
Orthopnea
Orthopnea is a medical condition characterized by difficulty breathing...
Orthopod
Orthopod refers to a surgeon specializing in the correction of deformi...
Orthopraxia
Orthopraxia emphasizes the practice of correct actions over beliefs in...
Orthopraxy
Orthopraxy emphasizes the importance of practice over belief in spirit...
Orthopsychiatry
Orthopsychiatry is a branch of psychiatry that focuses on the interpe...
Orthopter
An orthopter is an insect belonging to the order Orthoptera, which inc...
Orthopteran
Orthopteran refers to an order of insects, including grasshoppers and ...
Orthopteron
Orthopteron refers to an order of insects characterized by their strai...
Orthopterous
Orthopterous refers to insects such as grasshoppers and crickets that ...
Orthoptic
Orthoptic is a specialized profession focusing on the diagnosis and tr...
Orthoptics
Orthoptics is the branch of ophthalmology focused on diagnosing and tr...
Orthoptist
An orthoptist is a healthcare professional who specializes in diagnosi...
Orthopyroxene
Orthopyroxene is a group of silicate minerals characterized by straigh...
Orthorexia
Orthorexia is an unhealthy obsession with healthy eating to the point ...
Orthorhombic
Orthorhombic refers to a crystal structure with three mutually perpend...
Orthoscope
An orthoscope is a medical device used for examining the joint interna...
Orthoscopic
Orthoscopic means providing a clear and precise view of an object or...
Orthoselection
Orthoselection refers to the process of selecting a specific group of ...
Orthosis
An orthosis is a device used to support, align, correct, or improve th...
Orthostat
An orthostat is a large stone set upright to serve as a marker or to f...
Orthostates
Orthostates are upright stones used in ancient architecture to provide...
Orthostatic
Orthostatic means relating to or caused by an upright or standing posi...
Orthostatic hypotension
Orthostatic hypotension is a condition characterized by a sudden drop ...
Orthostichy
Orthostichy refers to the alignment of elements vertically in a text o...
Orthostyle
Orthostyle refers to the vertical arrangement of elements in a composi...
Orthotic
An orthotic is a device designed to support, align, or correct the fun...
Orthotics
Orthotics are devices designed to support and improve the function of ...
Orthotist
An orthotist is a healthcare professional who specializes in designing...
Orthotone
The term orthotone refers to a word that is stressed on the penultimat...
Orthotropic
The term orthotropic refers to an object or material that has differen...
Orthotropism
Orthotropism is the tendency of an organism to grow upright or in a ...
Orthotropous
Orthotropous refers to an ovule that is upright with the micropyle and...
Orthros
Orthros is the morning prayer service in the Eastern Orthodox Church, ...
Ortler
Ortler is a mountain located in the Southern Limestone Alps in Italy....
Ortles
Ortles is a term that refers to a peak in the Ortler Alps in Italy, kn...
Ortolan
The ortolan is a small bird considered a delicacy in French cuisine, t...
Orton
Orton is a rural area typified by its picturesque landscapes and small...
Orts
Orts are leftover scraps of food, usually considered to be inedible or...
Orumiyeh
The meaning of Orumiyeh is derived from its historical and cultural si...
Oruro
Oruro is a city in Bolivia known for its colorful carnival celebration...
ORV
ORV, or Off-Road Vehicle, refers to a type of vehicle designed for dri...
Orvieto
Orvieto is a charming Italian town known for its stunning cathedral an...
Orville
The meaning of Orville can be summed up as the innovation and ingenuit...
Orwell
Orwell's work serves as a powerful critique of totalitarianism and gov...
Orwell, George
Orwell, George is a writer known for his critiques of totalitarianism ...
Orwellian
The term Orwellian refers to a dystopian society characterized by oppr...
Oryol
Oryol is a city in Russia known for its historical significance....
Oryx
An oryx is a type of antelope known for its long, straight horns and d...
Orzo
Orzo is a type of pasta that resembles rice....
Os
An operating system (OS) is a software that manages hardware resources...
Osage
The Osage people are a Native American tribe originally from the Ohio ...
Osage orange
Osage orange is a fruit with a bumpy green exterior that is commonly u...
Osaka
Osaka is a bustling city in Japan known for its cuisine, historical si...
Osasco
Osasco is a city in Brazil known for its industrial and commercial act...
Osbert
Osbert is a children's book that follows the adventures of a young boy...
Osborn
The meaning of Osborn can be summarized as strength and protection giv...
Osborne
The meaning of Osborne is the inherent value or significance attribute...
Osborne House
Osborne House was Queen Victoria's beloved seaside retreat on the Isle...
Oscan
Oscan is an ancient language from ancient Italy that is primarily know...
Oscar
Oscar is a prestigious award given annually for excellence in the film...
Oscar II
Oscar II was a monarch who ruled Sweden and Norway from 1872 to 1907....
OSCE
OSCE stands for Objective Structured Clinical Examination, a type of a...
Osceola
Osceola was a famous Seminole leader who fought against the forced rel...
Oscillate
To oscillate means to move back and forth between two points or states...
Oscillating circuit
An oscillating circuit is a circuit that produces a continuous alterna...
Oscillating engine
An oscillating engine is a type of mechanism that swings or moves back...
Oscillating universe
The oscillating universe theory proposes that the universe undergoes a...
Oscillating universe theory
The oscillating universe theory suggests that the universe expands and...
Oscillation
Oscillation refers to the repetitive back and forth movement of someth...
Oscillator
An oscillator is a device that generates a repetitive electronic signa...
Oscillatory
Oscillatory means characterized by regular back-and-forth movement or ...
Oscillogram
An oscillogram is a visual representation of electrical signals captur...
Oscillograph
An oscillograph is a device used to visually display changes in an ele...
Oscillometer
An oscillometer is a device used to measure oscillations in various sy...
Oscilloscope
An oscilloscope is a device used to visually display and analyze the w...
Oscine
Oscine refers to singing birds that have a more complex vocal structur...
Oscitancy
Oscitancy can be described as apathy or indifference towards a particu...
Oscitant
Oscitant means feeling drowsy or yawning due to tiredness or boredom....
Osco-Umbrian
Osco-Umbrian refers to the ancient languages spoken by the Osco-Umbria...
Osculant
Osculant means close or barely touching, especially when referring to ...
Oscular
Oscular means relating to the mouth or kissing....
Osculate
To osculate means to touch or kiss lightly....
Osculating circle
The osculating circle is a circle that tangentially touches a given cu...
Osculating plane
The osculating plane is the tangent plane that closely approximates th...
Osculation
Osculation is the act of kissing or touching closely....
Osculum
An osculum is a mouth-like opening in sponges through which water is e...
OSD
OSD, or On Screen Display, is a visual representation of settings and ...
Osee
The meaning of Osee can be summarized as "salvation," representing red...
Ösel
Ösel means light in Tibetan Buddhism....
Osetic
The Osetic language is spoken by the Ossetian people in the Caucasus r...
OSFCW
OSFCW stands for One Sentence, Few Words, Clear Writing, emphasizing c...
Osgood
Osgood is a book that tells the story of a young boy's journey to se...
Osh
The meaning of Osh can be described as harmony, encompassing elements ...
OSHA
OSHA, or the Occupational Safety and Health Administration, ensures wo...
Oshawa
Oshawa is a city in Ontario, Canada....
Oshkosh
Oshkosh is a city in Wisconsin known for its annual AirVenture event, ...
Oshogbo
Oshogbo is a city in Nigeria known for its vibrant artistic community ...
Oshun
The meaning of Oshun revolves around love, fertility, and rivers in Yo...
OSI
The OSI (Open Systems Interconnection) model is a conceptual framework...
Osier
An osier is a type of willow tree often used for weaving baskets and f...
Osijek
Osijek is a city in Croatia known for its cultural heritage and univer...
Osiris
The meaning of Osiris is the ancient Egyptian god of resurrection and ...
Oskaloosa
Oskaloosa is a city in Iowa known for its historic downtown district a...
Öskemen
Öskemen holds cultural significance and is characterized as a historic...
OSlav
OSlav is a Slavic language that originated in South and Eastern Europe...
Osler
Osler, a term commonly associated with medicine, refers to a pioneer i...
Oslo
Oslo is the capital of Norway, known for its stunning architecture and...
Oslo Accord
The Oslo Accord was a landmark agreement aimed at achieving peace betw...
Oslo Fiord
Oslo Fiord is a beautiful inlet in Norway surrounded by picturesque la...
Osman
Osman means leader or ruler, symbolizing power and authority....
Osman I
Osman I was the founder of the Ottoman Empire....
Osmanli
Osmanli refers to the Ottoman Empire, a historical Islamic state that ...
Osmatic
Osmatic refers to the ability to perceive or detect smell....
Osmeterium
Osmeterium is a defensive organ in certain caterpillars that releases ...
Osmic
The word "osmic" means relating to smell or the sense of smell....
Osmics
Osmics is the sense related to the perception of smell....
Osmidrosis
Osmidrosis is a condition characterized by an excessive odor produced ...
Osmious
Osmious means having an intensely strong odor or taste....
Osmiridium
Osmiridium is a rare, dense alloy primarily found in alluvial deposits...
Osmium
Osmium is a dense metal known for its bluish-white color and high dens...
Osmium tetroxide
Osmium tetroxide is a powerful oxidizing agent used in organic synthes...
Osmo-
The term osmo- refers to the movement of water across a semi-permeable...
Osmometer
An osmometer is a device used to measure the osmotic pressure of a sol...
Osmometry
Osmometry is the measurement of osmotic pressure in a solution to dete...
Osmoregulation
Osmoregulation is the regulation of water and ion levels in an organ...
Osmose
Osmose is the movement of water through a semi-permeable membrane from...
Osmosis
Osmosis is the movement of solvent molecules through a selectively per...
Osmotic pressure
Osmotic pressure is the pressure that must be applied to a solution to...
Osmous
Osmous means relating to the diffusion of liquids through a semi-perme...
Osmund
Osmund is a genus of large ferns characterized by their feathery frond...
Osmunda
Osmunda is a genus of ferns known for their beautiful fronds and large...
Osnabrück
Osnabrück is a city in Germany known for its historical significance a...
Osnaburg
Osnaburg is a type of coarse plain-woven fabric typically made from fl...
OSO
OSO means bear in Spanish ("oso")....
Osorno
Osorno is a volcano located in southern Chile with a striking snow-cap...
OSP
OSP stands for open source project, referring to software projects wit...
Osprey
The osprey is a type of bird of prey that primarily feeds on fish....
OSRD
OSRD stands for Office of Scientific Research and Development, which p...
OSS
OSS, or open-source software, refers to software in which the source c...
Ossa
Ossa means bones, a fundamental part of the human body essential for s...
Ossature
Ossature refers to the skeletal structure or framework of a building o...
Ossein
Ossein is a protein found in bones that provides strength and structur...
Osselet
Osselet is a type of inflammatory condition affecting the fetlock join...
Osseous
Osseous refers to something related to bone tissue....
Osset
Osset is a term used to refer to the group of people originating from ...
Ossetia
Ossetia is a region in the Caucasus known for its cultural heritage....
Ossetian
Ossetian is a language spoken by the Ossetian people in Georgia and Ru...
Ossetic
Ossetic is a language spoken in the Caucasus region, primarily in Osse...
Ossi
Ossi is a nickname or short form for the name Oswald or in some cases ...
Ossia
Ossia is a musical term indicating an alternative passage or version o...
Ossian
The mythical figure of Ossian represents the embodiment of Gaelic hero...
Ossianic
Ossianic refers to the style of poetry and prose fraudulently attribut...
Ossicle
An ossicle is a small bone in the middle ear that transmits sound vibr...
Ossie
Ossie is a term of endearment, with a sense of affection and familiari...
Ossietzky
Ossietzky was a German journalist and pacifist who was awarded the Nob...
Ossiferous
Ossiferous means "bearing bones" as indicated by the root word ossi re...
Ossification
Ossification is the process of bone formation in the body....
Ossified
Ossified means fossilized or hardened over time, typically referring t...
Ossifrage
The ossifrage is a large Old World eagle known for its powerful talons...
Ossify
To ossify means to become rigid or set in one's ways....
Ossining
Ossining is a town with a rich history and stunning views along the Hu...
Osso bucco
Osso bucco is a traditional Italian dish consisting of tender braised ...
Ossobuco
Ossobuco is a dish that consists of tender braised veal shanks, typica...
Ossuarium
An ossuarium is a container for the bones of the deceased....
Ossuary
An ossuary is a repository for skeletal remains....
OST
OST, or Original Soundtrack, refers to the music accompanying a film, ...
Oste-
The prefix oste- refers to bones or bone tissue....
Osteal
Osteal pertains to bone....
Ostectomy
Ostectomy is a surgical procedure where a bone is removed from the bod...
Osteichthyan
Osteichthyan refers to a bony fish, characterized by having a skeleton...
Osteichthyes
Osteichthyes is a class of fish characterized by the presence of a bon...
Osteitis
Osteitis is the inflammation of the bones....
Osteitis deformans
Osteitis deformans, also known as Paget's disease, is a chronic condit...
Ostend
Ostend is a play that explores the complexities and nuances of human r...
Ostend Manifesto
The Ostend Manifesto was a document that proposed the acquisition of C...
Ostensible
The ostensible reason for his absence was a family emergency, but the ...
Ostensibly
The meaning of ostensibly is apparently or supposedly, but potentially...
Ostensive
The meaning of ostensive is clearly shown or exhibited....
Ostensive definition
Ostensive definition is the process of demonstrating the meaning of a ...
Ostensorium
An ostensorium is a sacred vessel used in Catholic liturgical worship ...
Ostensory
An ostensory is a receptacle for displaying and honoring the Eucharist...
Ostentation
Ostentation means a display of excessive showiness or wealth....
Ostentatious
Ostentatious means showing an excessive display of wealth or knowledge...
Osteo-
Osteo- refers to bone in medical terminology....
Osteoarthritis
Osteoarthritis is a degenerative joint disease causing pain and infl...
Osteoarthrosis
Osteoarthrosis is a degenerative joint disease characterized by the br...
Osteoblast
An osteoblast is a type of bone cell responsible for the formation of ...
Osteochondritis
Osteochondritis is a condition characterized by inflammation and damag...
Osteochondrosis
Osteochondrosis is a condition characterized by abnormal development o...
Osteoclasis
The osteoclasis procedure involves the intentional breaking of a bone ...
Osteoclast
An osteoclast is a type of bone cell responsible for breaking down and...
Osteocope
An osteocope is a device used for viewing bones and skeletal structure...
Osteocyte
Osteocyte is a cell that is responsible for maintaining the mineral co...
Osteofibrosis
Osteofibrosis is a condition characterized by the bone tissue being re...
Osteogenesis
Osteogenesis is the process of new bone formation....
Osteogenesis imperfecta
Osteogenesis imperfecta is a genetic disorder characterized by brittle...
Osteogenic
Osteogenic refers to the ability to produce bone tissue....
Osteoid
Osteoid is unmineralized bone matrix that eventually becomes mineraliz...
Osteology
Osteology is the study of the structure and function of bones in the h...
Osteoma
Osteoma is a benign tumor composed of mature bone tissue....
Osteomalacia
Osteomalacia is a condition characterized by softening of the bones du...
Osteometry
Osteometry is the measurement and analysis of bone dimensions for anth...
Osteomyelitis
Osteomyelitis is a bacterial infection of the bone and bone marrow....
Osteopath
An osteopath is a healthcare professional who focuses on treating musc...
Osteopathy
Osteopathy is a form of complementary medicine that focuses on treatin...
Osteopetrosis
Osteopetrosis is a rare genetic disorder where the bones become abnorm...
Osteophyte
An osteophyte is a bony outgrowth or projection that forms along the e...
Osteoplastic
Osteoplastic means relating to bone formation or reconstruction....
Osteoplasty
Osteoplasty is a surgical procedure that involves reshaping or rebuild...
Osteoporosis
Osteoporosis is a condition characterized by weakening of the bones, l...
Osteoporotic
Osteoporotic means having bones that are weakened and more prone to fr...
Osteoradionecrosis
Osteoradionecrosis is a serious condition where radiation therapy lead...
Osteosarcoma
Osteosarcoma is a malignant bone tumor that primarily affects children...
Osteosclerosis
Osteosclerosis is a condition characterized by abnormal hardening of b...
Osteosis
Osteosis is a condition characterized by abnormal bone growth and dens...
Osteotome
An osteotome is a surgical instrument used for cutting and preparing b...
Osteotomy
Osteotomy is a surgical procedure involving the cutting of a bone to r...
Österreich
Österreich means Austria....
Ostia
Ostia is a term that refers to the mouth of a river, especially in anc...
Ostiary
An ostiary is a person who guards the entrance of a church and has the...
Ostinato
An ostinato is a repetitive musical phrase or rhythm....
Ostiole
An ostiole is a small opening in certain plants through which spores o...
Ostium
An ostium is a small opening or orifice, especially in a human body....
Ostler
An ostler is a person who takes care of horses at an inn....
Ostmark
Ostmark was the name of the currency used in Nazi Germany, with mark r...
Ostomy
Ostomy is a surgical procedure that creates an artificial opening in t...
Ostosis
Ostosis refers to the hardening or calcification of tissues in the bod...
Ostpolitik
Ostpolitik was a policy of reconciliation towards Eastern Europe pursu...
Ostpreussen
Ostpreussen is a historical region in Eastern Prussia....
Ostracism
Ostracism is a form of exclusion from a social group or society as a p...
Ostracization
Ostracization is the act of excluding someone from a group or society....
Ostracize
To ostracize someone means to exclude them from a group or society....
Ostracod
An ostracod is a small crustacean with a bivalve shell found in aquati...
Ostracoderm
Ostracoderm refers to an extinct group of jawless armored fish that li...
Ostracon
An ostracon is a piece of pottery or stone used in ancient Greece for ...
Ostrakon
An ostrakon is a piece of pottery or stone used in ancient Greece for ...
Ostranenie
Ostranenie is a literary device that defamilarizes the familiar to enc...
Ostrava
Ostrava is a city in the Czech Republic that holds historical signific...
Ostrich
The ostrich is a large flightless bird known for its fast running spee...
Ostrich fern
The meaning of the ostrich fern relates to a type of fern characterize...
Ostrogoth
Ostrogoth refers to a member of the eastern branch of the Goths who pl...
Ostrovsky
"Ostrovsky is a dramatist who is known for his realistic portrayal of ...
Ostwald
Ostwald believed that change is inevitable and necessary for progress ...
Ostyak
Ostyak refers to the indigenous people of Western Siberia....
Osun
Osun is a Nigerian river goddess associated with divinity and fertilit...
Oswald
Oswald is a name derived from Old English meaning "divine power" with ...
Oswald, Lee Harvey
The meaning of Oswald, Lee Harvey is controversial due to the contradi...
Oswego
Oswego is a term that refers to friendship or an alliance between Nati...
Oswego tea
Oswego tea is a type of herbal tea made from the leaves of the Oswego ...
Oświęcim
Oświęcim, a town in Poland, is known for being the location of the Aus...
OT
Occupational therapy (OT) is a health profession that helps people par...
OTA
OTA, or Over-The-Air, refers to the process of updating software remot...
Otago
Otago is a region in New Zealand known for its scenic beauty and outdo...
Otaheite apple
The Otaheite apple is a tropical fruit that is also known as Malay app...
Otaheite orange
The meaning of Otaheite orange refers to a small, sweet citrus fruit n...
Otaku
Otaku is a term that refers to individuals with a deep passion for Jap...
Otalgia
Otalgia is a medical term that refers to ear pain or discomfort....
Otaru
Otaru is a quaint coastal city in Hokkaido known for its historic cana...
OTB
OTB, which stands for off-track betting, refers to placing wagers on h...
OTC
OTC means over-the-counter, referring to medications that can be purch...
Otello
"Otello" is a tragic opera that explores themes of jealousy, betrayal,...
Othello
The true tragedy of Othello lies in the destructive power of jealousy....
Other
The word other refers to something or someone distinct from oneself or...
Other day, the
The other day refers to a day that is not today, often used to describ...
Other fish to fry
Having other fish to fry means having more important or pressing matte...
Other good fish in the sea
There are plenty of other options and opportunities available....
Other half
The term "other half" refers to a person who completes you and is your...
Other man
"Other man" refers to a person who is not the primary partner in a rel...
Other ranks
Other ranks refer to military personnel who hold positions below offic...
Other side of the coin
The other side of the coin refers to a different perspective or viewpo...
Other side of the tracks
The phrase "other side of the tracks" refers to a location or social c...
Other than
The term other refers to something different or distinct from a certai...
Other things being equal
"Other things being equal" means all factors remaining the same or con...
Other way round, the
The meaning of other way round is opposite or in reverse....
Other woman
The phrase "other woman" typically refers to a woman who is involved r...
Other world
The term "other world" refers to a parallel realm or dimension beyond ...
Other-directed
Other-directed means being influenced by the expectations and actions ...
Otherguess
The meaning of otherguess can be understood as making a guess about so...
Otherize
To otherize means to treat someone as fundamentally different or separ...
Otherkin
People who identify as otherkin believe they are spiritually or mental...
Otherness
The concept of otherness refers to the state of being different or sep...