15-letter words containing a, s, o, i
- air force cross — a U.S. Air Force decoration awarded for extraordinary heroism in action
- air-superiority — designating a fighter aircraft built for long patrol capability at high altitudes and supersonic speeds, with air-to-air combat as its principal mission.
- alexandroupolis — a port in NE Greece, in W Thrace. Pop: 52 720 (2001 est)
- all-risk policy — An all-risk policy is an insurance policy that covers all loss or damage however it is caused, apart from any stated exceptions.
- allegoricalness — the quality of being allegorical
- allelochemicals — Plural form of allelochemical.
- alligator shear — heavy shears for cutting metal slabs.
- alphabetisation — The act or process of arranging in alphabetical order.
- alsace-lorraine — an area of NE France, comprising the modern regions of Alsace and Lorraine: under German rule 1871–1919 and 1940–44. Area: 14 522 sq km (5607 sq miles)
- altai mountains — a mountain system of central Asia, in W Mongolia, W China, and S Russia. Highest peak: Belukha, 4506 m (14 783 ft)
- aluminosilicate — a silicate in which some of the silicon in the tetrahedral unit SiO4 has been replaced by aluminium
- amaryllidaceous — of, relating to, or belonging to the Amaryllidaceae, a family of widely cultivated flowering plants having bulbs and including the amaryllis, snowdrop, narcissus, and daffodil
- ambassadorships — Plural form of ambassadorship.
- ambrosia beetle — any of various small beetles of the genera Anisandrus, Xyleborus, etc, that bore tunnels into solid wood, feeding on fungi growing in the tunnels: family Scolytidae (bark beetles)
- ambrosian chant — the liturgical chant, established by Saint Ambrose, characterized by ornamented, often antiphonal, singing.
- amenity society — a voluntary society established with the purpose of preserving historic art and architecture
- american smooth — a style of competitive ballroom dancing which incorporates elements of Latin dance
- americanologist — a foreign expert or specialist in American cultural or political matters: a leading Americanologist in the Kremlin.
- aminoglycosides — Plural form of aminoglycoside.
- anacostia river — a river in the District of Columbia flowing into the Potomac River. about 24 miles (39 km) long.
- anaesthesiology — the science of administering anesthetics.
- anamorphic lens — a component in the optical system of a film projector for converting standard 35mm film images into wide-screen format
- ancient history — Ancient history is the history of ancient civilizations, especially Greece and Rome.
- ancient of days — a name for God, originating in the Authorized Version of the Old Testament (Daniel 7:9)
- ancylostomiasis — infestation of the human intestine with blood-sucking hookworms, causing progressive anaemia
- andromonoecious — (of a plant species) having hermaphrodite and male flowers on the same plant
- androstenedione — a weak hormone, C19H26O2, produced by the ovaries, testes, and adrenal glands as a precursor to estrogen, testosterone, etc.: formerly taken in a concentrated tablet or capsule form as by some bodybuilders
- aneroid capsule — a box or chamber of thin metal, partially exhausted of air, used in the aneroid barometer and pressure altimeter.
- anesthetization — to render physically insensible, as by an anesthetic.
- anfractuosities — Plural form of anfractuosity.
- angina pectoris — a sudden intense pain in the chest, often accompanied by feelings of suffocation, caused by momentary lack of adequate blood supply to the heart muscle
- angiomyolipomas — Plural form of angiomyolipoma.
- angiotensin iii — 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.
- angustirostrate — having a narrow, beak-like part
- anisotropically — Physics. of unequal physical properties along different axes. Compare isotropic (def 1).
- ankylostomiasis — ancylostomiasis
- annapolis royal — a town in SE Canada in W Nova Scotia on an arm of the Bay of Fundy: the first settlement in Canada (1605). Pop: 550 (2001)
- anne hutchinson — Anne Marbury [mahr-buh-ree] /ˈmɑr bə ri/ (Show IPA), 1591–1643, American religious liberal, born in England: banished from Massachusetts 1637.
- anne of austria — 1601–66, wife of Louis XIII of France and daughter of Philip III of Spain: regent of France (1643–61) for her son Louis XIV
- annihilationism — the teaching or principle that trespassers and evildoers are completely destroyed rather than made to suffer in hell after death
- annihilationist — A person who believes that eternal punishment is the annihilation of both the body and the soul.
- anomalistically — In an anomalistic manner; with irregularity.
- anteroposterior — Relating to or directed toward both front and back.
- anthony hawkins — Sir Anthony Hope ("Anthony Hope") 1863–1933, English novelist and playwright.
- anthropogenesis — the study of the origins of man
- anthropologists — Plural form of anthropologist.
- anthropometrics — the science of measuring the size and proportions of the human body (called anthropometry), especially as applied to the design of furniture and machines.
- anthropopathism — ascription of human passions or feelings to a being or beings not human, especially to a deity.
- anthropopsychic — the attribution of consciousness to divine beings and nature
- anthroposophist — A proponent of anthroposophy.