Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z optostimulation optical stimulation optotag To employ optotagging as part of optogenetics optotagged tagged by optotagging optotagging tagging as part of an optogenetics experiment optothermal Relating to light and heat optotype A standardized symbol for testing vision. optotypic Relating to an optotype optronic optoelectronic optronics optoelectronics Opua A coastal settlement in the Bay of Islands, Northland, New Zealand. opulence Wealth. opulent Luxuriant, and ostentatiously magnificent. opulently In an opulent manner. Opunake A coastal town in Taranaki, New Zealand. opuntia Opuntia, a genus of cactus that includes such cacti as the prickly pear and xoconostle. opuntiaceous Belonging to the family Opuntiaceae (now mostly subfamily Opuntioideae in Cactaceae). opuntioid Any cactus of the subfamily Opuntioideae opus A work of music or set of works with a specified rank in an ordering of a composer's complete published works. opuscular Of or relating to an opusculum. opuscule A small or petty work. opusculum An opuscule; a short work. Opuzen A town in Croatia. oquassa A type of blueback trout, Salvelinus oquassa, specifically those found in the Rangeley Lakes Region of Maine. Now considered to be the same species as the Sunapee trout. Oquawka A village, the county seat of Henderson County, Illinois, United States. Oquendo A surname. Oquirrh A census-designated place in Salt Lake County, Utah. or Connects at least two alternative words, phrases, clauses, sentences, etc., each of which could make a passage true. ora A unit of money among the Anglo-Saxons. oracally Synonym of oracularly. orach especially Atriplex hortensis oracle A shrine dedicated to some prophetic deity. oraclelike Like an oracle; prophetic. oracular Of or relating to an oracle. oracularity Oracular speech or behaviour. oracularly In an oracular manner. oracularness oracularity oraculous Oracular. oraculously In an oraculous manner; like an oracle. oraculousness The state or condition of being oraculous. oracy The ability to speak, and to understand spoken language orad Located towards the oral opening (the mouth). Oradea The capital and largest city of Bihor County, Romania. Oradell A borough in Bergen County, New Jersey, United States. oragious stormy Oraha A surname from Aramaic. Orahovica A town in Croatia. Oraibi A Hopi village in Arizona, United States. Oraibian Of, relating, or pertaining to Oraibi, Arizona Orakzai A Pashtun tribe of Pakistan. oral Relating to the mouth. oralature Oral as opposed to written language structured for aesthetic and similar purposes; the oral equivalent of literature. oralcare The care and hygiene of the mouth. orale A white silk veil with coloured stripes, sometimes worn by the pope. oralisation The act or an act of oralising; the act or an act of turning something written into something oral. oralise To speak out something that is written, to turn something written into something oral. oralism A philosophy of education for the deaf, opposed to manualism, that uses spoken language consisting of lipreading, speech, the process of watching mouth movements, and mastering breathing techniques. oralist A supporter of oralism. oralistic Of or pertaining to oralism. orality The state of being oral. oralizable Able to be oralized. oralization The act or an act of oralizing; the act or an act of turning something written into something oral. oralize To speak out something that is written, to turn something written into something oral. oralizer One who oralizes. oralloy Highly-enriched uranium. orally By mouth. oralman An ethnic Kazakh migrant from the diaspora (back) to Kazakhstan. oralmost Located furthest in the oral direction. oralnasal oronasal oralness The quality or condition of being oral. Oram A surname. Orama A surname from Spanish. Oramas A surname from Spanish. Oran A city, port, and province of Algeria. Oranbo A barangay of Pasig, Metro Manila, Philippines. oranda A goldfish characterized by a prominent raspberry-like hood encasing its head. Orane A village, the administrative centre of Orane starostynskyi okruh, Ivankiv settlement hromada, Vyshhorod Raion, Kyiv Oblast, Ukraine. orange An evergreen tree of the genus Citrus such as Citrus sinensis which yields oranges (the fruit). orangeade A soft drink or a soda with an orange flavor. orangeat Candied orange peel. orangeberry A shrub native to Australia and Southeast Asia, related related to citrus and having small pink, citrus-like fruits, Glycosmis pentaphylla. Orangeburg A hamlet and census-designated place in the town of Orangetown, Rockland County, New York, United States. orangecello A drink resembling limoncello but made with oranges rather than lemons. In Italian, this drink is actually called arancello, from arancia (“orange”) Orangeism The principles or beliefs of the Loyal Orange Institution, commonly known as the Orange Order. orangeite A kind of kimberlite with phlogopite macrocrysts and microphenocrysts. orangeless Without oranges. orangelike Resembling or characteristic of an orange. orangelo A citrus fruit that is a cross between an orange and a grapefruit. orangely In an orange manner. Orangeman A member of the Loyal Orange Institution or Orange Order, an international Protestant fraternal order advocating continued British rule over Northern Ireland. orangeness The quality of being orange in colour. orangequat Citrus aurantium × Citrus japonica orangequit A monotypic species of tanager (Euneornis campestris) endemic to Jamaica. orangerita A margarita cocktail made with orange. orangeroot The plant goldenseal (Hydrastis canadensis). orangery A greenhouse in which orange trees are grown. orangespotted Having orange spots orangetini A martini cocktail made with orange liqueur. Orangetown A town in Rockland County, New York, United States. orangette A candied orange peel, usually covered in dark or milk chocolate. Orangevale A census-designated place in Sacramento County, California, United States. Orangeville A locality in the Wollondilly council area, eastern New South Wales, Australia. Orangewoman A female Orangeman. orangewood The wood of the orange tree. orangeworm A snout moth of the genus Amyelois that is a pest to some commercial crops orangey A Protestant, especially one that is a member of the Protestant unionist community of Northern Ireland. orangie A pro-British Ulster Protestant. oranginess Tasting like an orange, or having a powerfully orangey flavor. orangish Relatively orange in colour. orangishness The quality or state of being orangish: somewhat orange, orange-like, or somewhat like an orange. Orangism Support for the House of Orange. Orangist A supporter of the House of Orange. orangite An orange-yellow variety of thorite, found in Norway. Orango One of the islands of the Bijagós Archipelago, Guinea-Bissau orangoid Resembling (that of) an orangutan. orangutan An arboreal ape, characterised by its shaggy reddish-brown coat and long arms, of the genus Pongo, native to Borneo and Sumatra. orangutanlike Resembling an orangutan Orani A municipality of Bataan, Philippines. Orania A town in Karoo, Northern Cape, South Africa. Oranian Of or relating to the Algerian city of Oran. Oranje A surname from Dutch. Oranjeleeuwin the Netherlands women's national football team Oranjestad The capital city of Aruba, Netherlands orankay In the Malay Archipelago, a person of distinction, a chief or noble. Oranmore A town in County Galway, Ireland. orans A figure in an attitude of prayer, usually standing, with the elbows close to the sides of the body and with the hands outstretched sideways, palms up. Oraon Synonym of Kurukh. orarian Of or pertaining to a coast. orarion A deacon's stole in the Eastern Orthodox Church. orarium A collection of private devotions. orate To speak formally; to give a speech. oration A formal, often ceremonial speech. orational Synonym of oratory (“relating to public speaking”). oratiuncle short speech or oration orator Someone who orates or delivers an oration. oratorial oratorical. oratorially In an oratorial way. oratorian A member of a Roman Catholic oratory. oratorical of, or relating to oratory or an orator. oratorically In an oratorical manner. oratorio A musical composition, often based on a religious theme; similar to opera but with no costume, scenery or acting. oratorious oratorical oratorize To play the orator. oratorlike Resembling or characteristic of an orator. oratorship The role or status of an orator. oratory A private chapel or prayer room. oratress A female orator oratrix A female plaintiff, or complainant, in equity pleading orature The oral equivalent of literature: a collection of traditional folk songs, stories, etc., that is communicated orally rather than in writing. orazamide A synthetic hepatoprotective drug. orb A spherical body; a sphere, especially one of the celestial spheres; a sun, planet, or star.