12-letter words containing o, c, a, s
- aerodynamics — Aerodynamics is the study of the way in which objects move through the air.
- aeroelastics — the study of aeroelastic phenomena.
- aethrioscope — an instrument which measures temperature changes caused by different conditions of the sky
- affectations — Plural form of affectation.
- afficionados — Plural form of afficionado.
- 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.
- agnostically — a person who holds that the existence of the ultimate cause, as God, and the essential nature of things are unknown and unknowable, or that human knowledge is limited to experience. Synonyms: disbeliever, nonbeliever, unbeliever; doubter, skeptic, secularist, empiricist; heathen, heretic, infidel, pagan.
- agriproducts — Plural form of agriproduct.
- airpocalypse — (informal) The presence of dense smog in many parts of China.
- alalcomeneus — the first man: he reared Athena and reconciled Zeus and Hera.
- allegoristic — writing or using allegory; interpreting in an allegorical sense.
- altercations — Plural form of altercation.
- amnioscopies — Plural form of amnioscopy.
- amniotic sac — membrane around embryo or foetus
- amphicarpous — producing two kinds of fruit that differ either in form or in time of ripening.
- amphicoelous — (of the vertebrae of most fishes and some amphibians) concave at the anterior and posterior ends
- ampullaceous — shaped like an ampulla or a bladder
- amuse-bouche — an appetizer before a meal
- 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.
- anchorperson — the primary reporter on a news television broadcast
- androscoggin — a river flowing from NE New Hampshire through SW Maine into the Kennebec River. 171 miles (275 km) long.
- anecdotalism — an inclination to relate anecdotes
- 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
- angiosarcoma — a rare, malignant tumour which grows rapidly in the blood vessels
- animalculous — a minute or microscopic animal, nearly or quite invisible to the naked eye, as an infusorian or rotifer.
- animatronics — a branch of film and theatre technology that combines traditional puppetry techniques with electronics to create lifelike animated effects
- anisocytosis — (medicine) Significant size variation of blood cells.
- anisomorphic — differing in the semantic scope of terms referring to the real world: for instance, English and Russian are anisomorphic with regard to colour terms, English treating light blue and navy blue as shades of one colour but Russian treating these two shades as unrelated
- annunciators — Plural form of annunciator.
- anorthoclase — a variety of microcline, rich in sodium and sometimes having a play of color: sometimes considered a variety of orthoclase.
- anorthositic — resembling or consisting of anorthosite
- ansate cross — ankh
- antagonistic — If a person is antagonistic to someone or something, they show hatred or dislike towards them.
- anthocarpous — resembling or pertaining to an anthocarp
- anthocyanins — Plural form of anthocyanin.
- anticathodes — Plural form of anticathode.
- antichthones — the antipodes
- anticonsumer — opposed to consumerism
- anticyclones — Plural form of anticyclone.
- antinucleons — Plural form of antinucleon.
- antiochus iv — ?215–164 bc, Seleucid king of Syria (175–164), who attacked the Jews and provoked the revolt of the Maccabees
- antipolitics — the rejection of party and electoral politics
- antisociable — Antisocial.
- antisocially — In an antisocial manner.