13-letter words containing a, o, r, t
- altered chord — a chord in which one or more notes are chromatically changed by the introduction of accidentals
- althorp house — a mansion in Northamptonshire: seat of the Earls Spencer since 1508; originally a medieval house; altered (1787) to its present neoclassical style by Henry Holland. Diana, Princess of Wales is buried on Round Oval Island in the centre of the ornamental lake in Althorp Park
- aluminothermy — a process for reducing metallic oxides using finely divided aluminium powder. The mixture of aluminium and the oxide is ignited, causing the aluminium to be oxidized and the metal oxide to be reduced to the metal
- amarantaceous — amaranthine
- amazon parrot — any of several tropical American green parrots of the genus Amazona, popular as pets.
- ambidexterous — ambidextrous
- ambimoustrous — able to use a computer mouse proficiently with either hand
- aminotriazole — a white, crystalline, soluble powder, NHNC(NH2)NCH, used for killing weeds or other undesired vegetation: a carcinogen
- ammonia water — ammonia (def 2).
- amor asteroid — one of a small group of asteroids whose orbits approach but do not cross that of the earth: named after the first such asteroid discovered (1932).
- amphiprostyle — (esp of a classical temple) having a set of columns at both ends but not at the sides
- amphitrichous — having a single flagellum at each end.
- amphitryon 38 — a play (1938) by Jean Giraudoux.
- amphotericins — Plural form of amphotericin.
- amplificatory — of the nature of enlargement or extension, as of a statement, narrative, etc.
- anachronistic — You say that something is anachronistic when you think that it is out of date or old-fashioned.
- anchor pocket — a recess in the bow of a vessel, for housing a stockless anchor.
- androcentrism — centered on, emphasizing, or dominated by males or masculine interests: an androcentric society; an androcentric religion.
- anfractuosity — the condition or quality of being anfractuous
- angiokeratoma — a skin disease characterized by clusters of dilated blood vessels and by thickened skin, forming warty growths, especially on the scrotum, fingers, and toes.
- angora rabbit — a breed of rabbit with long usually white silky hair
- Ångstrom unit — a unit of length equal to 10 −10 metre, used principally to express the wavelengths of electromagnetic radiations. It is equivalent to 0.1 nanometre
- anharmonicity — (mechanics) Of or pertaining to the deviation of a system from harmonicity (being a harmonic oscillator).
- anisometropia — an imbalance in the power of the two eyes to refract light
- anisometropic — relating to anisometropia
- annual report — a report presented by the directors of a company to its shareholders each year, containing the profit-and-loss account, the balance sheet, and details of the past year's activity
- another place — the other House of Parliament (used in the House of Commons to refer to the House of Lords and vice versa)
- another-guess — of another kind.
- antenniferous — having antennae
- anterolateral — Both anterior and lateral.
- anthony hoare — (person) (C. Anthony R. Hoare, Tony) A computer scientist working on programming languages, especially parallel ones. Hoare was responsible for Communicating Sequential Processes (CSP). See also: pointer, Simone.
- anthraquinone — a yellow crystalline solid used in the manufacture of dyes, esp anthraquinone dyes, which have excellent colour properties. Formula: C6H4(CO)2C6H4
- anthropogenic — relating to anthropogenesis
- anthropolatry — the worship of a human as a god
- anthropologic — the science that deals with the origins, physical and cultural development, biological characteristics, and social customs and beliefs of humankind.
- anthropometer — an instrument that consists of a calibrated, vertical rod to which are attached two horizontal arms, one fixed and one movable, for measuring the human trunk and limbs.
- anthropometry — the comparative study of sizes and proportions of the human body
- anthropopathy — the attribution of human passions, etc, to a deity, object, etc
- anthropophagi — cannibals
- anthropophagy — cannibalism
- anthropophobe — One who dislikes human beings.
- anthropophyte — a plant species accidentally introduced during the cultivation of another
- anthroposcopy — physiognomy (def 2).
- anthroposophy — the spiritual and mystical teachings of Rudolph Steiner, based on the belief that creative activities such as myth making, which formed a part of life in earlier times, are psychologically valuable, esp for educational and therapeutic purposes
- anthrozoology — The study of the interactions between humans and animals.
- anti-abortion — opposed to abortion
- anti-androgen — any of a class of drugs that oppose the action of androgens; used in the treatment of prostate cancer and various male sexual disorders
- anti-european — opposed to the European Union or to political union of the countries of Europe
- anti-monarchy — a state or nation in which the supreme power is actually or nominally lodged in a monarch. Compare absolute monarchy, limited monarchy.
- anti-morality — conformity to the rules of right conduct; moral or virtuous conduct.