12-letter words containing o, s, t, i
- afrocentrism — centered on Africa or on African-derived cultures, as those of Brazil, Cuba, and Haiti: Afrocentric art.
- aggravations — Plural form of aggravation.
- aggregations — Plural form of aggregation.
- aggrupations — Plural form of aggrupation.
- 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.
- agroindustry — an activity combining agriculture and industry
- airbrush out — to remove evidence of (someone or something from photographs, books, or history)
- algesiometer — an instrument for determining the sensitiveness of the skin to a painful stimulus.
- allegoristic — writing or using allegory; interpreting in an allegorical sense.
- alpha boötis — Arcturus
- alstroemeria — any plant of the tuberous perennial liliaceous genus Alstroemeria, originally S American, grown for their brightly coloured orchid-like flowers
- altaltissimo — the apex of something
- altercations — Plural form of altercation.
- alternations — Plural form of alternation.
- altitudinous — pertaining to altitude or height
- ambidextrous — Someone who is ambidextrous can use both their right hand and their left hand equally skilfully.
- ambiposition — (linguistics) An adposition that can occur either before or after its complement.
- ambisextrous — Informal. sexually attracted to both sexes; bisexual. used by or suitable for either sex; unisex: ambisextrous hair styles.
- ambitionless — without ambition, unambitious
- ambulatories — Plural form of ambulatory.
- amentiferous — bearing aments
- amniotic sac — membrane around embryo or foetus
- amortisation — Alternative spelling of amortization.
- amphistomous — (of certain animals, such as leeches) having a sucker at either end of the body
- amphitropous — (of a plant ovule) partially inverted so that the base and the micropyle at the apex are the same distance from the funicle
- an iron fist — a cruel and unyielding attitude or approach
- anachronists — Plural form of anachronist.
- analyzations — Plural form of analyzation.
- anastomosing — Present participle of anastomose.
- anecdotalism — an inclination to relate anecdotes
- anemotropism — orientation in response to a current of air.
- angelologist — a person who studies angelology
- angiopathies — Plural form of angiopathy.
- angiostomous — having a narrow opening
- angiotensins — Plural form of angiotensin.
- 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.
- anisothermal — (thermodynamics) Of or pertaining to a system that is not in thermal equilibrium, that does not have a single fixed temperature.
- anisotropies — Plural form of anisotropy.
- anisotropism — the state of being anisotropic
- annunciators — Plural form of annunciator.
- anorthositic — resembling or consisting of anorthosite
- antagonising — Present participle of antagonise.
- antagonistic — If a person is antagonistic to someone or something, they show hatred or dislike towards them.
- anteposition — the position opposite a given part of a plant
- anteriorness — The state or quality of being anterior.
- anthocyanins — Plural form of anthocyanin.
- anthologised — Simple past tense and past participle of anthologise.
- anthologiser — Alternative spelling of anthologizer.