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15-letter words containing i, o, a, n

  • antituberculous — (medicine) Acting to combat or counteract tuberculosis.
  • antivivisection — opposed to the act or practice or performing experiments on living animals, involving cutting into or dissecting the body
  • aortic stenosis — abnormal narrowing of the aorta, especially of its orifice, usually as a result of rheumatic fever or embryologic anomalies.
  • apolipoproteins — Plural form of apolipoprotein.
  • apostolicalness — The state or quality of being apostolical.
  • apple macintosh — Macintosh
  • apprentice work — work done when young and a novice
  • appropinquation — the action of approaching
  • appropriateness — suitable or fitting for a particular purpose, person, occasion, etc.: an appropriate example; an appropriate dress.
  • approval rating — approval of a politician as shown by opinion polls
  • approximateness — The quality of being approximate.
  • aqueous ammonia — ammonia (def 2).
  • aqueous-ammonia — a colorless, pungent, suffocating, highly water-soluble, gaseous compound, NH 3 , usually produced by the direct combination of nitrogen and hydrogen gases: used chiefly for refrigeration and in the manufacture of commercial chemicals and laboratory reagents.
  • arbitration bar — a bar of cast iron used as a sample for the batch to which it belongs.
  • archaeobotanist — A person engaged in archaeobotany.
  • architectonical — Alternative form of architectonic.
  • ariboflavinosis — a condition resulting from a dietary deficiency of riboflavin
  • aristotelianism — a philosophical tradition based on the wide-ranging belief system of Aristotle
  • armour-piercing — capable of penetrating armour plate
  • arms inspection — the official checking of a country's weapons and other military equipment, usually to check that international agreements have been respected
  • arrivals lounge — a waiting area for people meeting passengers
  • arrondissements — Plural form of arrondissement.
  • arterialization — to convert (venous blood) into arterial blood by the action of oxygen in the lungs.
  • ascending colon — the first portion of the colon, beginning at the cecum in the lower right abdominal cavity and continuing upward along the right posterior abdominal wall to approximately the lower ribs.
  • asian shorthair — a generic term for a group of breeds of short-haired cat of Burmese type, including the Bombay
  • assign a policy — If you assign a policy, you transfer legal ownership of an insurance policy to another person.
  • assimilationism — the theory of promoting the incorporation and mixing of different groups in society
  • assimilationist — a person who favours and promotes the incorporation and mixing of different groups in society
  • association law — any law governing the association of ideas
  • astrodynamicist — a person who studies astrodynamics
  • astronautically — In an astronautic way.
  • astronavigation — celestial navigation
  • at pistol point — being under or using the threat of being shot
  • at short notice — Notice is used in expressions such as 'at short notice', 'at a moment's notice' or 'at twenty-four hours' notice', to indicate that something can or must be done within a short period of time.
  • at the point of — very close to; on the verge of
  • atlantic salmon — a valuable food and game fish, Salmo salar, mainly of northern coastal Atlantic waters or, when spawning, in freshwater streams tributary to the ocean.
  • atlas mountains — a mountain system of N Africa, between the Mediterranean and the Sahara. Highest peak: Mount Toubkal, 4165 m (13 664 ft)
  • atrabiliousness — The state or quality of being characterized by melancholy or glumness.
  • audio equipment — electrical devices used to play or record sound
  • audio frequency — a frequency in the range 20 hertz to 20 000 hertz. A sound wave of this frequency would be audible to the human ear
  • audio recording — an electronic recording of sound
  • auditor general — (in Canada) a federal official responsible for auditing government departments and making an annual report
  • audubon society — a North American organization devoted to the conservancy of birds
  • authentications — Plural form of authentication.
  • autocannibalism — The eating of part of one's own body.
  • autocollimation — the process used in an autocollimator.
  • autocorrelation — the condition occurring when successive items in a series are correlated so that their covariance is not zero and they are not independent
  • autoinoculation — the inoculation of microorganisms (esp viruses) from one part of the body into another, usually in the form of a vaccine
  • autotransfusion — a process in which a patient receives some of his or her own blood in a transfusion rather than a donor's blood
  • away-going crop — a crop planted by a tenant that matures after the expiration of the tenancy and is rightfully the tenant's to harvest.
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