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15-letter words containing a, c, t, o, m

  • archaeastronomy — (astronomy, archaeology) The historical, especially archeological, study of astronomy; the study of the astronomical systems and methods of ancient cultures often embracing the astrology and cosmology of the past.
  • archeoastronomy — the branch of archaeology that deals with the apparent use by prehistoric civilizations of astronomical techniques to establish the seasons or the cycle of the year, especially as evidenced in the construction of megaliths and other ritual structures.
  • arms inspection — the official checking of a country's weapons and other military equipment, usually to check that international agreements have been respected
  • asbestos cement — a compound of asbestos fiber and Portland cement formerly used for various nonstructural building purposes.
  • astrodynamicist — a person who studies astrodynamics
  • as…as they come — the most characteristic example of a class or type
  • at the mercy of — in the power 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.
  • 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
  • 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.
  • baconian method — induction (def 4a).
  • badminton court — the court on which games of badminton are played
  • barium chromate — a yellow, crystalline compound, BaCrO 4 , used as a pigment (barium yellow)
  • basidiomycetous — belonging or pertaining to the basidiomycetes.
  • bathing costume — A bathing costume is a piece of clothing that is worn for swimming, especially by women and girls.
  • bathroom scales — scales typically kept in a bathroom for people to weigh themselves
  • bioaccumulation — the process in which industrial waste, toxic chemicals, etc. gradually accumulate in living tissue
  • biomathematical — relating to biomathematics
  • bituminous coal — a soft black coal, rich in volatile hydrocarbons, that burns with a smoky yellow flame. Fixed carbon content: 46–86 per cent; calorific value: 1.93 × 107 – 3.63 × 107 J/kg
  • black guillemot — a common guillemot, Cepphus grylle: its summer plumage is black with white wing patches and its winter plumage white with greyish wings
  • black mountains — a mountain range running from N Monmouthshire and SE Powys (Wales) to SW Herefordshire (England). Highest peak: Waun Fach, 811 m (2660 ft)
  • boston massacre — an outbreak (1770) in Boston against British troops, in which a few citizens were killed
  • bowel complaint — bowel disease or condition
  • box the compass — to name the compass points in order
  • brachystomatous — having a short proboscis, as certain insects.
  • broadcast storm — (networking)   A broadcast on a network that causes multiple hosts to respond by broadcasting themselves, causing the storm to grow exponentially in severity. See network meltdown.
  • cadmean victory — a victory won with great losses to the victors
  • caffe macchiato — a hot beverage consisting of espresso and a small amount of foamed milk.
  • cairngorm-stone — smoky quartz.
  • calamine lotion — a soothing lotion containing calamine
  • calcium oxalate — a white, crystalline powder, CaC 2 O 4 , insoluble in water, used in making oxalic acid.
  • camelot library — (library)  
  • camera operator — a person who operates a film or television camera
  • campaign button — a disk-shaped pin worn by a supporter of a political candidate, usually bearing the name of the candidate and often a slogan or the candidate's picture.
  • camphorated oil — a liniment consisting of camphor and peanut oil, used as a counterirritant
  • capitulationism — advocacy or approval of capitulation.
  • carpometacarpal — Anatomy. of or relating to the carpus and the metacarpus.
  • carpometacarpus — a bone in the wing of a bird that consists of the metacarpal bones and some of the carpal bones fused together
  • casement-window — a window sash opening on hinges that are generally attached to the upright side of its frame.
  • cassette memory — a removable magnetic tape cartridge that stores data and programs.
  • castanospermine — a substance obtained from the Australian chestnut or black bean tree
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