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15-letter words containing o, m, i

  • 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.
  • arc de triomphe — the triumphal arch in Paris begun by Napoleon I to commemorate his victories of 1805–6 and completed in 1836
  • arch of triumph — Arc de Triomphe.
  • 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
  • army air forces — a unit comprising almost all aviation, with its personnel, equipment, etc.: it became part of the Air Force on July 26, 1947.
  • arrondissements — Plural form of arrondissement.
  • 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
  • astrodynamicist — a person who studies astrodynamics
  • 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)
  • atmospherically — pertaining to, existing in, or consisting of the atmosphere: atmospheric vapors.
  • atomic cocktail — an aqueous solution of radioactive substance administered orally as part of the treatment for cancer
  • audio equipment — electrical devices used to play or record sound
  • autocannibalism — The eating of part of one's own body.
  • autocollimation — the process used in an autocollimator.
  • autodidacticism — any self-directed learning or self-education
  • automatic drive — an automotive transmission requiring either very little or no manual shifting of gears.
  • automatic focus — a system in a camera which automatically adjusts the lens so that the object being photographed is in focus, often one using infrared light to estimate the distance of the object from the camera
  • automatic pilot — An automatic pilot or an autopilot is a device in an aircraft that automatically keeps it on a particular course.
  • automatic rifle — a type of light machine gun capable of firing automatically or in single shots.
  • automorphically — in an automorphic manner
  • autorhythmicity — The quality of being autorhythmic, or generating its own rhythm, as for example the cells of the cardiac muscle do.
  • axiom of choice — the axiom of set theory that given any collection of disjoint sets, a set can be so constructed that it contains one element from each of the given sets.
  • azobisformamide — (chemistry) azodicarbonamide.
  • azuchi-momoyama — a period of Japanese art, 1568–1600, characterized by construction of imposing, elegant castles and small, unadorned teahouses, lavish decorative arts, and bright-colored painting.
  • baconian method — induction (def 4a).
  • badminton court — the court on which games of badminton are played
  • ball ammunition — live small-arms ammunition
  • baptism of fire — If someone who has just begun a new job has a baptism of fire, they immediately have to cope with very many severe difficulties and obstacles.
  • bar examination — a written examination to determine if one is qualified to practice law in a particular jurisdiction.
  • barium chloride — a poisonous compound, BaCl2, consisting of flat white crystals that are soluble in water: it is used to treat water, metals, leather, etc.
  • barium chromate — a yellow, crystalline compound, BaCrO 4 , used as a pigment (barium yellow)
  • barium peroxide — a gray-white powder, BaO2, used as a bleach and in making hydrogen peroxide
  • barry mountains — a mountain range in SE Australia, in E Victoria: part of the Australian Alps
  • basidiomycetous — belonging or pertaining to the basidiomycetes.
  • basse-normandie — a region of NW France, on the English Channel: consists of the Cherbourg peninsula in the west rising to the Normandy hills in the east; mainly agricultural
  • bathing costume — A bathing costume is a piece of clothing that is worn for swimming, especially by women and girls.
  • be of two minds — to be undecided or irresolute
  • bear comparison — to be sufficiently similar in class or range to be compared with (something else), esp favourably
  • bedroom slipper — a soft shoe worn in the house
  • bevelled mirror — a mirror with a bevelled edge
  • bide one's time — to wait patiently for an opportunity
  • billings method — a natural method of birth control that involves examining the colour and viscosity of the cervical mucus to discover when ovulation is occurring
  • binomial series — an infinite series obtained by expanding a binomial raised to a power that is not a positive integer.
  • bioaccumulation — the process in which industrial waste, toxic chemicals, etc. gradually accumulate in living tissue
  • biogeochemistry — the science of biological, chemical, and geological aspects of the environment
  • bioluminescence — the production of light by living organisms as a result of the oxidation of a light-producing substance (luciferin) by the enzyme luciferase: occurs in many marine organisms, insects such as the firefly, etc
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