12-letter words containing a, c, i, s
- adriatic sea — an arm of the Mediterranean between Italy and the Balkan Peninsula
- adscititious — added or supplemental; additional
- aeroacoustic — Relating to aeroacoustics.
- 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.
- aesthetician — a student of aesthetics
- aestheticism — the doctrine that aesthetic principles are of supreme importance and that works of art should be judged accordingly
- aestheticist — a person devoted to aesthetics and the pursuit of beauty
- aestheticize — make aesthetic
- aethrioscope — an instrument which measures temperature changes caused by different conditions of the sky
- affectations — Plural form of affectation.
- afficionados — Plural form of afficionado.
- affranchised — Simple past tense and past participle of affranchise.
- africanness' — Also, Africa. of or from Africa; belonging to the black peoples of Africa.
- 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.
- 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.
- agp graphics — Accelerated Graphics Port
- agriproducts — Plural form of agriproduct.
- aircraftsman — a person holding the rank of noncommissioned officer in the RAF.
- airpocalypse — (informal) The presence of dense smog in many parts of China.
- alias dictus — otherwise called; alias.
- alice's fern — Hartford fern.
- allegoristic — writing or using allegory; interpreting in an allegorical sense.
- altercations — Plural form of altercation.
- ambisyllabic — (of a single speech sound or cluster) shared phonetically by two contiguous syllables, as the single n -sound of any or the pl -cluster of grappling.
- americanisms — a custom, trait, belief, etc., peculiar to the United States of America or its citizens.
- americanness — of or relating to the United States of America or its inhabitants: an American citizen.
- amicableness — The state or quality of being amicable.
- amnioscopies — Plural form of amnioscopy.
- amniotic sac — membrane around embryo or foetus
- amphiblastic — (of animal ova) showing complete but unequal cleavage after fertilization
- 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
- anabaptistic — relating to Anabaptists
- anacatharsis — severe vomiting
- anachronisms — Plural form of anachronism.
- anachronists — Plural form of anachronist.
- anaesthetics — the science, study, and practice of anaesthesia and its application
- anapaestical — belonging to the form of poetry which uses a reversed dactyl consisting of two short syllables followed by a long one
- anastigmatic — (of a lens or optical device) not astigmatic
- 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
- anelasticity — the property of a substance which has a disproportionate relationship between stress and strain
- aneurysmatic — (medicine) Describing a blood vessel that has an aneurysm; aneurysmal.
- 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
- animalculism — the theory explaining psychological and pathological phenomena through animalcules