12-letter words containing a, e, r, o
- alexanderson — Ernst F. W [urnst] /ɜrnst/ (Show IPA), 1878–1975, U.S. engineer and inventor.
- algesiometer — an instrument for determining the sensitiveness of the skin to a painful stimulus.
- all for love — a drama in blank verse (1678) by Dryden.
- all the more — All is used in structures such as all the more or all the better to mean even more or even better than before.
- all together — in chorus, in unison
- all-powerful — An all-powerful person or organization has the power to do anything they want.
- allegoristic — writing or using allegory; interpreting in an allegorical sense.
- allegorizing — Present participle of allegorize.
- allegrissimo — (music) A direction in musical notation indicating that the musical piece should be played very fast and lively.
- allelomorphs — Plural form of allelomorph.
- alliteration — Alliteration is the use in speech or writing of several words close together which all begin with the same letter or sound.
- allosauruses — Plural form of allosaurus.
- almond green — a yellowish-green colour
- alstroemeria — any plant of the tuberous perennial liliaceous genus Alstroemeria, originally S American, grown for their brightly coloured orchid-like flowers
- altercations — Plural form of altercation.
- alternations — Plural form of alternation.
- alto-relievo — high relief
- alto-rilievo — alto-relievo
- alton towers — a 19th-century Gothic Revival mansion with extensive gardens in NW central England, in Staffordshire: site of a large amusement park
- alyce clover — a tropical perennial clover (Alysicarpus vaginalis) sometimes used as a cover crop and for fodder
- amazon river — a river in N South America, flowing E from the Peruvian Andes through N Brazil to the Atlantic Ocean: the largest river in the world in volume of water carried. 3900 miles (6280 km) long.
- ambidextrous — Someone who is ambidextrous can use both their right hand and their left hand equally skilfully.
- ambisextrous — Informal. sexually attracted to both sexes; bisexual. used by or suitable for either sex; unisex: ambisextrous hair styles.
- ambrettolide — a colorless liquid, C 16 H 28 O 2 , having a strong musky odor, used as a fixative in the manufacture of perfume.
- ambulatories — Plural form of ambulatory.
- ameliorating — Present participle of ameliorate.
- amelioration — the act or an instance of ameliorating or the state of being ameliorated
- ameliorative — Able to repair or ameliorate.
- amelioratory — tending to ameliorate
- amenorrhoeic — absence of the menses.
- amentiferous — bearing aments
- amethopterin — (now rare) Methotrexate.
- among others — used to indicate that there are several more people like the one or ones mentioned, but that you do not intend to mention them all
- amor patriae — love of one's country; patriotism
- amortizement — a sloping top on a buttress, pillar, etc.
- amour-propre — self-respect
- amourousness — Rare spelling of amorousness.
- ampelography — the science concerned with the identification and classification of grapevines
- amperometric — relating to or involving the measurement of an electric current
- amphotericin — an amphoteric antibiotic produced by the bacterium Streptomyces nodosus and used in the treatment of fungal infections.
- anaerobiosis — life in the absence of oxygen
- anaerobiotic — anaerobic
- anamorphoses — Plural form of anamorphosis.
- 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
- androcentric — having or regarding man or the male sex as central or primary
- androgenesis — a type of reproduction in insects and plants involving the development of an embryo that contains only paternal chromosomes
- androgenetic — related to androgenesis
- androgenized — Simple past tense and past participle of androgenize.
- androsterone — an androgenic steroid hormone produced in the testes. Formula: C19H30O2