12-letter words containing o, c, a, r
- aerodonetics — the study of soaring or gliding flight, esp the study of gliders
- aerodynamics — Aerodynamics is the study of the way in which objects move through the air.
- aeroelastics — the study of aeroelastic phenomena.
- aeromagnetic — of magnetism in the atmosphere
- aeromechanic — an aircraft mechanic
- aeromedicine — the medical treatment of disorders associated with air or space travel
- aeronautical — Aeronautical means involving or relating to the design and construction of aeroplanes.
- aethrioscope — an instrument which measures temperature changes caused by different conditions of the sky
- afro-asiatic — a family of languages of SW Asia and N Africa, consisting of the Semitic, ancient Egyptian, Berber, Cushitic, and Chadic subfamilies
- afrocentrism — centered on Africa or on African-derived cultures, as those of Brazil, Cuba, and Haiti: Afrocentric art.
- after-school — After-school activities are those that are organized for children in the afternoon or evening after they have finished school.
- agaricaceous — belonging to the Agaricaceae, a family of fungi including mushrooms having blade-shaped gills on the underside of the cap.
- agranulocyte — a white blood cell without granules in its cytoplasm
- agriproducts — Plural form of agriproduct.
- agrochemical — a chemical, such as a pesticide, used for agricultural purposes
- ailurophilic — relating to ailurophilia
- ailurophobic — relating to ailurophobia
- air corridor — an air route along which aircraft are allowed to fly
- airpocalypse — (informal) The presence of dense smog in many parts of China.
- airport code — a three-letter abbreviation of the names of the world's major airports, used especially as an identifier for routing baggage.
- alcaptonuria — Alternative spelling of alkaptonuria.
- alcohol-free — (of beer or wine) containing only a trace of alcohol
- allegoristic — writing or using allegory; interpreting in an allegorical sense.
- allotropical — (chemistry, rare) Of or pertaining to an element that exhibits allotropy.
- altercations — Plural form of altercation.
- alyce clover — a tropical perennial clover (Alysicarpus vaginalis) sometimes used as a cover crop and for fodder
- amenorrhoeic — absence of the menses.
- aminobutyric — (organic chemistry) Of or pertaining to any of several isomeric univalent radicals in which a hydrogen atom of a butyric radical is replaced by an amino group.
- amperometric — relating to or involving the measurement of an electric current
- amphicarpous — producing two kinds of fruit that differ either in form or in time of ripening.
- amphotericin — an amphoteric antibiotic produced by the bacterium Streptomyces nodosus and used in the treatment of fungal infections.
- anachronical — Not in the correct date order. Chronologically incorrect.
- anachronisms — Plural form of anachronism.
- anachronists — Plural form of anachronist.
- anacrogynous — having the female sex organs arising from any cell below the apex of the stem, thereby not terminating its growth, as certain liverworts.
- anaerobiotic — anaerobic
- anchor light — a 32-point light, visible from at least two miles away, shown at night near the bow and not more than 20 feet (6 meters) above the deck of a vessel lying at anchor.
- anchor plant — a South American shrub, Colletia cruciata, of the buckthorn family, having flattened green branches and yellowish-white flowers.
- anchor watch — a deck watch maintained by the crew of a ship at anchor.
- anchoritical — in the manner of or resembling an anchorite
- anchorperson — the primary reporter on a news television broadcast
- anchovy pear — a Jamaican tree, Grias cauliflora, bearing edible fruits that taste like the mango: family Lecythidaceae
- andragogical — the methods or techniques used to teach adults: Many educators believe that the principles of andragogy, as advanced by Malcolm Knowles, have great relevance to adult education; others are not so certain.
- androcentric — having or regarding man or the male sex as central or primary
- androclinium — clinandrium.
- androgenetic — related to androgenesis
- androscoggin — a river flowing from NE New Hampshire through SW Maine into the Kennebec River. 171 miles (275 km) long.
- anemochorous — (of a fruit, seed, or spore) adapted for dispersion by wind.
- angiocarpous — being or having fruit contained in a vessel such as a shell
- angiographic — relating to or using angiography