13-letter words containing o, s, i, t
- ambidexterous — ambidextrous
- ambient noise — the level of the total noise in an area
- ambimoustrous — able to use a computer mouse proficiently with either hand
- ambitiousness — having ambition; eagerly desirous of achieving or obtaining success, power, wealth, a specific goal, etc.: ambitious students.
- ammonium salt — any salt containing the NH 4 + ion, formed by the neutralization of ammonium hydroxide by an acid.
- amniocenteses — Plural form of amniocentesis.
- amniocentesis — If a pregnant woman has an amniocentesis, fluid is removed from her womb in order to check that her unborn baby is not affected by certain genetic disorders.
- 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).
- amphictyonies — Plural form of amphictyony.
- amphiprostyle — (esp of a classical temple) having a set of columns at both ends but not at the sides
- amphistomatal — (of a leaf) having stomata on both surfaces
- amphitrichous — having a single flagellum at each end.
- amphotericins — Plural form of amphotericin.
- anachronistic — You say that something is anachronistic when you think that it is out of date or old-fashioned.
- androcentrism — centered on, emphasizing, or dominated by males or masculine interests: an androcentric society; an androcentric religion.
- anesthetic to — incapable of feeling or responding to
- anfractuosity — the condition or quality of being anfractuous
- angioplasties — Plural form of angioplasty.
- angiotensin i — any of three oligopeptides occurring in plasma, an inactive form (angiotensin I) and two varieties (angiotensin II and angiotensin III) that elevate blood pressure and stimulate the adrenal cortex to secrete aldosterone.
- anglicisation — The process by which something or someone (usually a word) is made more English. Usually applied to language or culture.
- 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
- anisometropia — an imbalance in the power of the two eyes to refract light
- anisometropic — relating to anisometropia
- annexationism — the theory or practice of taking over another country's territory, especially by force.
- annexationist — the theory or practice of taking over another country's territory, especially by force.
- annunciations — Plural form of annunciation.
- anomalistical — relating to a planet's angular distance from its last perihelion or orbital point nearest to the sun
- antenniferous — having antennae
- anti-nepotism — patronage bestowed or favoritism shown on the basis of family relationship, as in business and politics: She was accused of nepotism when she made her nephew an officer of the firm.
- anti-politics — the science or art of political government.
- anti-populism — (lowercase) any of various, often antiestablishment or anti-intellectual political movements or philosophies that offer unorthodox solutions or policies and appeal to the common person rather than according with traditional party or partisan ideologies.
- anti-sedition — incitement of discontent or rebellion against a government.
- anticipations — Plural form of anticipation.
- anticlockwise — If something is moving anticlockwise, it is moving in the opposite direction to the direction in which the hands of a clock move.
- anticollision — intended to avoid collisions
- anticommunism — the opposition to communism
- anticommunist — (initial capital letter) a member of the Communist Party or movement.
- anticorrosion — the prevention or counteracting of corrosion
- anticorrosive — preventing corrosion
- antielectrons — Plural form of antielectron.
- antiespionage — Countering or opposing espionage.
- antiformalist — opposed to formalism
- antigonus (i) — 382-301 b.c.; Macedonian general under Alexander the Great: king of Macedonia (306-301)
- antimodernism — modern character, tendencies, or values; adherence to or sympathy with what is modern.
- antimodernist — opposed to modernism
- antineutrinos — Plural form of antineutrino.
- antinomianism — a person who maintains that Christians are freed from the moral law by virtue of grace as set forth in the gospel.
- antiobscenity — opposed to or working to combat obscenity
- antiochus iii — known as Antiochus the Great. 242–187 bc, king of Syria (223–187), who greatly extended the Seleucid empire but was forced (190) to surrender most of Asia Minor to the Romans
- antioestrogen — a drug that inhibits the activity of oestrogens