Words that start with O
Officiant
An officiant is someone who presides over a ceremony or event, such as...
Officiary
Officiary refers to individuals who hold positions of official autho...
Officiate
Officiate means to perform official duties, such as presiding over a c...
Officinal
The term officinal refers to a substance recognized for its medicinal ...
Officious
The meaning of officious is being excessively eager to help or advise...
Officious will
Officious will is the act of asserting authority in a domineering or i...
Offing
Offing refers to the distant sea as seen from the shore....
Offish
Offish means to be distant or aloof towards others....
Offlap
Offlap refers to the gradual overlap of layers of sediment upwards ont...
Offline
Offline means not connected to the internet or unavailable for use....
Offload
To offload means to transfer a task or responsibility to someone else....
Offprint
An offprint is a separate printing of an article or chapter that was o...
Offscouring
Offscouring, often referred to as waste or debris, is the leftover mat...
Offscourings
Offscourings refers to worthless or undesirable elements that are disc...
Offscreen
Offscreen refers to actions or events that occur not visible within th...
Offset
The meaning of offset is to compensate or counterbalance something....
Offset lithography
Offset lithography is a printing technique in which the image is trans...
Offshoot
An offshoot is a branch that has developed from a main source or organ...
Offshore
Offshore refers to activities or services conducted abroad or in a for...
Offshore dock
An offshore dock is a structure built in a body of water away from the...
Offshore drilling
Offshore drilling is the process of extracting oil and gas from beneat...
Offshoreman
Offshoreman is a term that refers to someone who works offshore, typic...
Offshoring
Offshoring refers to the practice of relocating business operations or...
Offside
In soccer, offside refers to a player being in a position that puts th...
Offsider
An offsider is a partner or colleague who assists and works alongside ...
Offspring
Offspring refers to the descendants of a person or animal....
Offstage
Offstage refers to the area behind the performance space where actors ...
Offtake
Offtake refers to the purchase of a certain amount of a product by a b...
Offtrack
Offtrack means deviating from the intended course or path....
Ofgas
Ofgas is a regulatory body that oversees the gas industry in the UK....
Ofgem
Ofgem is the regulator for the gas and electricity markets in Great Br...
Ofili
Ofili is a piece of art that showcases the artist's unique style and c...
Oflag
Oflag refers to a type of German prisoner-of-war camp during World War...
OFlem
OFlem is a term that refers to the Old Flemish language spoken in medi...
Oflot
Oflot is a platform that allows users to share their opinions and expe...
OFr.
The meaning of OFr. is Old French, referring to the language and liter...
OFris
OFris refers to the Old Frisian language, a West Germanic language spo...
OFS
OFS stands for Offering for Sale, which refers to the sale of securiti...
Ofsted
Ofsted is an educational regulatory body in the UK that inspects and e...
Oft
The word oft is often used to indicate something that occurs frequentl...
Oftel
Oftel was the regulator for the telecommunications industry in the Uni...
Often
The word often means frequently or regularly occurring....
Often as not
"Often as not" means frequently, but not always....
Oftentimes
Oftentimes means frequently or repeatedly....
Ofuro
Ofuro is a traditional Japanese bathtub used for soaking and relaxatio...
Ofwat
Ofwat is an economic regulator that oversees the water industry in Eng...
Og
Og is a legendary figure in ancient Hebrew texts, known for being a gi...
Ogaden
Ogaden holds a significant importance in the struggle for self-determi...
Ogam
Ogam is an ancient writing system used in medieval Ireland and Scotlan...
Oganesson
Oganesson is a synthetic noble gas element with the atomic number 118,...
Ogasawara Gunto
Ogasawara Gunto is a remote archipelago located in the Pacific Ocean, ...
Ogasawara Jima
Ogasawara Jima is an isolated island known for its unique ecosystem an...
Ogbomosho
Ogbomosho is a city in Nigeria that is known for its rich cultural her...
Ogburn
Ogburn's theory focuses on cultural dynamics and how they shape societ...
Ogden
Ogden holds a significant place in the history of the American West, w...
Ogdensburg
Ogdensburg is a city in New York known for its historic significance a...
Ogdoad
Ogdoad refers to a group of eight entities or deities in ancient Egypt...
Ogdon
The meaning of Ogdon represents a sense of mystery and ambiguity....
Ogee
An ogee is a type of curve that is double-curved resembling an S-shape...
Ogee arch
An ogee arch is a type of architectural element that features a distin...
Ogeechee
Ogeechee refers to the river that flows through parts of Georgia and e...
Ogen melon
The Ogen melon is a type of muskmelon known for its sweet and refreshi...
Ogham
Ogham is an ancient Irish alphabet consisting of a series of lines and...
Ogilvie
The meaning of Ogilvie is innovative and forward-thinking....
Ogive
An ogive is a graphical representation of data that shows cumulative f...
Oglala
Oglala refers to a Sioux tribe known for their warrior tradition and r...
Ogle
To ogle means to stare at someone or something with desire, usually in...
Oglethorpe
Oglethorpe was a prominent colonial figure who founded the Georgia col...
Ogma
Ogma is a god of eloquence, knowledge, and communication in Irish myth...
Ogmios
Ogmios is a Celtic deity associated with eloquence and persuasive spee...
OGO
OGO means "pride" in Yoruba, a language spoken by the people of Nigeri...
Ogonek
An ogonek is a diacritical mark used in several languages to indicate ...
Ogooué
The word Ogooué refers to a major river in Gabon....
Ogopogo
Ogopogo is a legendary lake monster believed to inhabit Okanagan Lake ...
OGPU
OGPU, the Soviet secret police organization, was responsible for intel...
Ogre
An ogre is a cruel and monstrous creature typically portrayed as a man...
Ogress
An ogress is a female monster or giantess in folklore, typically depic...
Ogun
Ogun is a powerful West African deity associated with iron and metalwo...
Ogygian
Ogygian refers to something ancient or outdated....
Oh
The word oh is used to express a range of emotions such as surprise, d...
OHAC
OHAC stands for Open, High, Anxious, Closed and refers to different le...
OHC
OHC stands for overhead camshaft, referring to an engine design where ...
OHG
OHG, also known as Old High German, refers to the earliest stage of th...
Ohia lehua
Ohia lehua is a native Hawaiian tree known for its vibrant red blossom...
Ohio
Ohio is the heart of the Midwest, known for its industrial history and...
Ohio buckeye
Ohio buckeye is a type of tree known for its distinctive fruit and pal...
Ohio River
The Ohio River is a significant tributary of the Mississippi River in ...
Öhlenschläger
Öhlenschläger is a literary figure known for his dramatic works and co...
Ohlin
Ohlin is a Nobel Prize-winning economist known for his contributions t...
Ohm
The ohm represents the unit of electrical resistance in a circuit....
Ohm's law
Ohm's law states that the current flowing through a conductor is dire...
Ohmage
The ohmage is a measure of electrical resistance in a circuit, express...
Ohmic
Ohmic refers to a type of electrical resistance that follows Ohm's Law...
Ohmic resistance
Ohmic resistance is the constant resistance value exhibited by a mater...
Ohmmeter
An ohmmeter is a device used to measure electrical resistance in a cir...
Oho
Oho is an exclamation expressing surprise or realization....
Ohře
Ohře is a river in the Czech Republic known for its beautiful landscap...
Ohrid
Ohrid is a scenic city in North Macedonia known for its beautiful lake...
Ohrmazd
Ohrmazd represents the supreme deity in Zoroastrianism who embodies pr...
Ohtani rule
The Ohtani rule allows a player to both pitch and hit in baseball game...
Ohv
OHV stands for Overhead Valve, which refers to the placement of the en...
Oi
Oi is a Brazilian Portuguese greeting or expression used to get someon...
OIC
OIC, or Organization of Islamic Cooperation, is a multinational organi...
Oidium
Oidium is a plant disease caused by fungal pathogens that results in p...
Oik
Oik means home or household in ancient Greek....
Oil
Oil is a essential liquid used for cooking, skincare, and energy produ...
Oil and water don't mix
"Oil and water don't mix" means that two things or people are fundamen...
Oil beetle
Oil beetle is a type of beetle known for its ability to produce oily f...
Oil burner
An oil burner is a heating device that burns oil to produce heat for a...
Oil cake
Oil cake is a byproduct of oil extraction process which retains nutrie...
Oil City
Oil City is a place known for its rich history in the oil industry....
Oil color
The meaning of oil color lies in its vibrant and rich hues that captiv...
Oil derrick
An oil derrick is a drilling structure used to extract petroleum or na...
Oil drum
An oil drum is a container used to store and transport oil or other li...
Oil field
An oil field is an area containing an abundance of crude oil that can ...
Oil gilding
Oil gilding is a technique where metal leaf is applied using an adhesi...
Oil gland
An oil gland is a sebaceous gland that secretes oily substances to lub...
Oil hardening
Oil hardening is a heat treatment process where steel is heated and th...
Oil meal
Oil meal is a byproduct of extracting oil from seeds or nuts, which is...
Oil of catechumens
Oil of catechumens is a sacred oil used in certain Christian rituals t...
Oil of cloves
Oil of cloves is a natural remedy known for its analgesic and antisept...
Oil of lavender
Oil of lavender is a natural extract derived from the lavender plant k...
Oil of the sick
Oil of the sick is a sacramental used in the Catholic Church for the a...
Oil of turpentine
Oil of turpentine is a volatile oil distilled from pine resin often us...
Oil of vitriol
Oil of vitriol, also known as sulfuric acid, is a highly corrosive min...
Oil of wintergreen
Oil of wintergreen is an analgesic substance extracted from the leaves...
Oil paint
Oil paint is a type of paint that uses oils as a binder to create a sm...
Oil painting
Oil painting is a technique where pigments are mixed with oil as a bin...
Oil palm
Oil palm is a type of palm tree that is cultivated for its oil-rich fr...
Oil pan
An oil pan is a component of a vehicle's engine that collects and stor...
Oil patch
Oil patch refers to a region of land where oil drilling and extraction...
Oil rig
An oil rig is a large structure used for drilling and extracting oil f...
Oil Rivers
Oil Rivers refers to the waterways in Nigeria's Niger Delta region tha...
Oil sand
Oil sand, also known as tar sands, is a type of unconventional petrole...
Oil sands
Oil sands are a type of unconventional petroleum deposit where natural...
Oil shale
Oil shale is a rock containing organic matter that can be processed ...
Oil slick
Oil slick refers to a thin layer of oil that spreads across the surfac...
Oil spill
An oil spill refers to the release of a large amount of oil into the e...
Oil tanker
An oil tanker is a large ship specifically designed for transporting o...
Oil varnish
Oil varnish is a type of protective coating made from oil that enhan...
Oil well
An oil well is a drilled hole in the Earth's surface designed to extra...
Oil-cooled
Oil-cooled means that a device is cooled using oil instead of another ...
Oil-harden
Oil-hardening is a process where steel is hardened by being heated and...
Oil-immersion objective
Oil-immersion objective refers to a microscope lens designed to immers...
Oil-plant
Oil-plant refers to a plant that produces oil either from its seeds or...
Oil-seed rape
Oil-seed rape is a plant that produces rapeseed oil and is commonly us...
Oilbird
The oilbird is a nocturnal bird that navigates through echolocation an...
Oilcan
The term oilcan refers to a container used for dispensing oil....
Oilcloth
Oilcloth is a fabric
Oilcup
Oilcup is a small container used for holding oil, typically metallic o...
Oildale
Oildale is a community located in Kern County, California, known for i...
Oiled
To be "oiled" means to have a substance applied to something in order ...
Oiled silk
Oiled silk refers to fabric that has been treated with oil to make it ...
Oiler
An oiler is a crewmember responsible for maintaining and operating mac...
Oilfired
Oilfired means powered or heated by a specific type of fuel oil....
Oilfish
Oilfish is a type of fish known for its rich flavor and buttery textur...
Oilgas
Oilgas refers to a combination of oil and gas resources found undergro...
Oillet
Oillet is a type of flower with a spicy fragrance often used in perfum...
Oillionaire
An oil billionaire is a wealthy individual who has amassed their fortu...
Oilman
An oilman is a person involved in the extraction, refinement, and dist...
Oilpaper
Oilpaper is thin wrapping paper coated with oil to make it waterproof ...
Oilseed
Oilseed refers to a seed that contains oil and is used for the product...
Oilskin
Oilskin is waterproof fabric typically used for outdoor clothing....
Oilspot glaze
Oilspot glaze is a type of ceramic glaze that creates iridescent dark ...
Oilstone
An oilstone is a sharpening tool used to hone the edges of knives, sci...
Oiltight
The term oiltight refers to something that is completely impermeable t...
Oily
Oily means having an excess of oil or greasy substances....
Oink
The word oink is an onomatopoeic term representing the sound made by a...
Oinochoe
An oinochoe is a type of ancient Greek wine jug used for pouring and s...
Ointment
Ointment is a semi-solid preparation containing medicinal substances f...
Oireachtas
Oireachtas is the Irish word for parliament or legislative assembly....
Oise
Oise is a department in the Hauts-de-France region of France, characte...
Oistrakh
Oistrakh was a legendary violinist known for his exceptional skill and...
Oita
Oita is a city in Japan famous for its hot springs and onsen....
Oiticica
Oiticica is a type of tree found in Brazil known for its flamboyant or...
Oiticica oil
Oiticica oil is a type of vegetable oil extracted from the seeds of th...
OJ
OJ is a term commonly used to refer to orange juice....
Oji-Cree
Oji-Cree is an Indigenous language that combines elements of Ojibwe an...
Ojibwa
Ojibwa refers to a Native American tribe known for their rich cultural...
Ojibway
Ojibway is an indigenous Native American language spoken by the Ojibwe...
Ojibwe
Ojibwe is a Native American language spoken by the Ojibwe people in No...
Ojo caliente
Ojo Caliente means "hot eye" in Spanish, with ojo referring to "eye" a...
OJT
On-the-job training refers to gaining practical skills and knowledge i...
OK
OK means approval or acceptance....
Oka
Oka refers to a famous Japanese mountain range....
Okanagan
The Okanagan region is known for its stunning vineyards and beautiful ...
Okanagan Lake
Okanagan Lake is a stunning body of water in British Columbia known fo...
Okapi
The okapi is a rare and elusive mammal native to the tropical forests ...
Okavango
The Okavango Delta is a beautiful oasis in the heart of the Kalahari D...
Okay
"Okay" means being in a state that is acceptable or satisfactory....
Okayama
Okayama is a city in Japan known for its historical significance and b...
Okazaki
Okazaki refers to a series of short DNA fragments synthesized on the l...
Oke
The word oke is slang for "okay" or "alright."...
Okeechobee
Okeechobee is a place that holds spiritual significance for the Semino...
Okeechobee Waterway
The Okeechobee Waterway is a man-made canal system in Florida connecti...
Okefenokee Swamp
The Okefenokee Swamp is a unique and wild ecosystem characterized by i...
Okeghem
Okeghem was a prominent composer in the Renaissance period....
Oken
Oken means unity or togetherness in Indonesian....
Okey-doke
Okey-doke means agreement or acceptance, often used casually or inform...
Okhotsk
Okhotsk is a region in Russia known for its rich history and unique wi...
Okhotsk Plate
The Okhotsk Plate is a tectonic plate located in the northwestern Paci...
Okie
An Okie is a term used to refer to a native of Oklahoma or a migrant f...
Okinawa
Okinawa is a island located in Japan known for its unique culture and ...
Okla.
Okla. is a shortened form of Oklahoma that refers to the state in the ...
Oklahoma
Oklahoma is a state in the United States known for its rich Native Ame...
Oklahoma City
Oklahoma City is the capital of the state of Oklahoma, known for its h...
Oklahoma City Bombing
The Oklahoma City Bombing was a domestic terrorist truck bombing on Ap...
Oklahoman
Oklahoman refers to a resident of Oklahoma....
Okle-dokle
"Okle-dokle" means affirmatively agreeing or acknowledging something, ...
Okmulgee
Okmulgee is a place with rich history and cultural significance in Okl...
Okoume
Okoume is a type of wood commonly used in boat building due to its lig...
Okovango
The Okavango delta symbolizes the intricacies of the natural world and...
Okra
The okra is a green vegetable with a slimy texture often used in South...
Okri
Okri embodies imagination in his literary works, exploring the depths ...
Okta
Okta is a cloud-based identity management platform that helps organiza...
Oktoberfest
Oktoberfest is a traditional beer festival held annually in Munich, Ge...
Okuninushi
The meaning of Okuninushi represents prosperity, luck, and success in ...
OL
The meaning of OL is ordered lists....
Olaf I
Olaf I was a pioneer in the early history of Norway, establishing the ...
Olaf II
Olaf II was a Norwegian king known for his Christianization efforts an...
Olaf V
Olaf V was a monarch who served as the King of Norway from 1957 to 199...
Olallieberry
Olallieberry is a type of hybrid berry known for its unique flavor pro...
Öland
Öland is an island located off the coast of Sweden....
Olathe
Olathe is a city in Kansas where growing community and opportunities t...
Olav V
Olav V was the king of Norway from 1957 to 1991, known for his informa...
Olbers
Olbers' paradox demonstrates the contradiction between the observed da...
Olbers' paradox
Olbers' paradox states that the infinite distribution of stars in the ...
Olcott
Olcott is a destination known for its beautiful beaches and serene atm...
Old
The age-old tradition has been passed down for generations....
Old Adam
"Old Adam" refers to the original sin inherited by humanity from Adam ...
Old age
Old age is a period of life marked by wisdom and experience....
Old age pension
Old age pension is a form of financial support provided by the governm...
Old as Adam
"Old as Adam" means very old or ancient....
Old Bailey
Old Bailey represents the central criminal court of England and Wales....
Old Believer
The term Old Believer refers to adherents of the traditional Russian O...
Old Bill
Old Bill symbolizes the passage of time and the hardships faced by vet...
Old bird
"Old bird" refers to experienced individuals who are wise and knowledg...
Old boy
"Old boy" refers to an elderly man with a senior status or distinguish...
Old British
Old British refers to the language spoken in Britain before the Norman...
Old Bulgarian
Old Bulgarian is an ancient language that was used in the medieval Kin...
Old Castile
Old Castile is a region in Spain known for its medieval towns and hist...
Old Catholic
Old Catholic refers to a branch of Christianity that broke away from t...
Old chap
"Old chap" is a term of endearment used to refer to a male individual,...
Old chestnut
An old chestnut is a well-worn idea or phrase that has been repeated s...
Old chum
Old chum refers to a long-time friend or pal, with the emphasis on the...
Old Church Slavonic
Old Church Slavonic is the ancient liturgical language of the Easter...
Old clothes man
The term "old clothes man" refers to a person who sells second-hand cl...
Old college try, the
The meaning of "old college try" is to put forth a strong effort attem...
Old Comedy
Old Comedy is a form of ancient Greek comedy that satirizes and exagge...
Old Contemptibles
Old Contemptibles refers to the veteran British soldiers who fought in...
Old country
Old country refers to a rural area with a nostalgic and traditional wa...
Old covenant
The old covenant refers to the agreement between God and the Israelite...
Old Curiosity Shop, The
The Old Curiosity Shop is a novel by Charles Dickens about a young gir...
Old Danish
The meaning of Old Danish can be understood as the language spoken in ...
Old Dart
Old Dart refers to England, typically used affectionately or humorousl...
Old Delhi
Old Delhi is a historical area of Delhi, filled with ancient temples, ...
Old Dominion
Old Dominion means the past era or former state of a specific region o...
Old Dutch
Old Dutch refers to the ancient language spoken by the people in the r...
Old English
Old English is the earliest form of the English language, used in Engl...
Old English pattern
The Old English pattern refers to the traditional design elements comm...
Old English sheepdog
The Old English sheepdog is a large breed of dog known for its shaggy ...
Old face
The phrase "old face" emphasizes the aged appearance or worn-out qua...
Old Faithful
Old Faithful is a geyser in Yellowstone National Park that is known fo...
Old fart
"Old fart refers to an elderly person who is considered out-of-touch o...
Old fashioned
Old fashioned means something that is outdated or characteristic of a ...
Old fellow
"Old fellow refers to a person, typically a man, who is elderly or of ...
Old field
Old field refers to an abandoned agricultural area that has been left ...
Old Flemish
Old Flemish is a dialect of the Flemish language that was used in the ...
Old fogy
Old fogy refers to a person who is outdated or old-fashioned, often re...
Old Franconian
Old Franconian was a West Germanic language spoken in the early Middle...
Old French
Old French refers to the medieval form of the French language spoken f...
Old Frisian
Old Frisian is an ancient language that was spoken in the region of Fr...
Old fustic
The meaning of old fustic is a yellow dye obtained from the wood of a ...
Old girl
"Old Girl" refers to the nostalgia and experience age brings to a woma...
Old Glory
Old Glory symbolizes patriotism and national pride for Americans....
Old goat
The term old goat is used colloquially to refer to someone who is old ...
Old gold
Old gold refers to a shade of gold that is aged and has a slightly dul...
Old growth
Old growth forests are ecosystems that have reached a state of maturit...
Old Guard
Old Guard refers to those who uphold traditional beliefs and practices...
Old Guardism
Old Guardism refers to a resistance to change or modernization, often ...
Old habits die hard
Old habits die hard because change is difficult to enact after years o...
Old hand
An old hand refers to someone who is experienced or skilled in a parti...
Old Harry
Old Harry is a legend along the Jurassic Coast in England, known for...
Old hat
"Old hat" means something that is outdated or no longer popular....
Old High German
Old High German is an early stage of the German language that was spok...
Old Icelandic
Old Icelandic refers to the medieval language used in Iceland during t...
Old identity
The meaning of old identity centers around one's past experiences, bel...
Old Ionic
Old Ionic refers to a dialect of the Greek language that was spoken in...
Old Iranian
Old Iranian refers to the ancient languages and cultures of Iran befo...
Old Irish
Old Irish is an ancient Gaelic language that was spoken in Ireland and...
Old Ironsides
"Old Ironsides" is a nickname for the USS Constitution, a historic shi...
Old Italian
Old Italian refers to the language spoken in Italy between the 9th and...
Old Kingdom
The Old Kingdom refers to the period in ancient Egyptian history known...
Old lady
The old lady symbolizes wisdom and experience gained through years of ...
Old Lady of Threadneedle Street
The Old Lady of Threadneedle Street refers to the Bank of England, one...
Old Latin
Old Latin refers to the early form of the Latin language that was spok...
Old Line State
Old Line State refers to the state of Maryland, with the term Old Line...
Old Low Franconian
Old Low Franconian is an ancient Germanic language that was spoken in ...
Old Low German
Old Low German refers to the language spoken and written in medieval n...
Old maid
Old Maid is a term used to describe an unmarried woman, often with a c...