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15-letter words containing a, c, e, r, m

  • apartment block — building: flats, apartments
  • apical meristem — meristem at the apex of a root or shoot.
  • apollo computer — (company)   A company making workstations often used for CAD. From 1980 to 1987, Apollo were the largest manufacturer of network workstations. Apollo workstations ran Aegis, a proprietary operating system with a Posix-compliant Unix alternative frontend. Apollo's networking was particularly elegant, among the first to allow demand paging over the network, and allowing a degree of network transparency and low sysadmin-to-machine ratio that is still unmatched. Apollo's largest customers were Mentor Graphics (electronic design), GM, Ford, Chrysler, and Boeing (mechanical design). Apollo was acquired by Hewlett-Packard in 1989, and gradually closed down over the period 1990-1997.
  • arabic numerals — the figures 1, 2, 3, 4, 5, 6, 7, 8, 9, and the 0 (zero) that originated in India; Hindu-Arabic numerals
  • arc de triomphe — the triumphal arch in Paris begun by Napoleon I to commemorate his victories of 1805–6 and completed in 1836
  • 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.
  • archaebacterium — Any primitive bacteria-like organism in the kingdom Archaea.
  • 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.
  • arithmetic mean — an average value of a set of integers, terms, or quantities, expressed as their sum divided by their number
  • armenian church — the national Church of Armenia, founded in the early fourth century ad, the dogmas and liturgy of which are similar to those of the Orthodox Church
  • 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.
  • asymmetric bars — a pair of wooden or fibreglass bars placed parallel to each other but set at different heights, for various exercises
  • asymmetric time — musical time consisting of an odd number of beats in each bar divided into uneven combinations, such as 3 + 2, 4 + 3, 2 + 3 + 2, etc
  • at the mercy of — in the power of
  • atmospherically — pertaining to, existing in, or consisting of the atmosphere: atmospheric vapors.
  • automatic drive — an automotive transmission requiring either very little or no manual shifting of gears.
  • automatic rifle — a type of light machine gun capable of firing automatically or in single shots.
  • baggage reclaim — the process of passengers' getting back the baggage that they have checked in for a flight
  • ballroom dancer — a person who participates in ballroom dancing
  • 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)
  • barrancabermeja — a city in N Colombia.
  • bathroom scales — scales typically kept in a bathroom for people to weigh themselves
  • bathymetrically — In a bathymetric way.
  • bear animalcule — tardigrade (def 3).
  • bear comparison — to be sufficiently similar in class or range to be compared with (something else), esp favourably
  • black marketeer — A black marketeer is someone who sells goods on the black market.
  • black sea bream — a sparid fish, Spondyliosoma cantharus, found in N Europe and the Mediterranean
  • black september — a Palestinian Terrorist group, responsible for the assassinations of Israeli athletes at the Olympic Games at Munich in 1972
  • black-marketeer — to sell articles in the black market.
  • bladder campion — a European caryophyllaceous plant, Silene vulgaris, having white flowers with an inflated calyx
  • boston massacre — an outbreak (1770) in Boston against British troops, in which a few citizens were killed
  • british america — British North America.
  • buckinghamshire — a county in SE central England, containing the Vale of Aylesbury and parts of the Chiltern Hills: the geographic and ceremonial county includes Milton Keynes, which became an independent unitary authority in 1997. Administrative centre: Aylesbury. Pop (excluding Milton Keynes): 478 000 (2003 est). Area (excluding Milton Keynes): 1568 sq km (605 sq miles)
  • cactus geranium — a plant, Pelargonium echinatum, of the geranium family, native to southern Africa, having prickly stipules and white or reddish flowers.
  • cadmean victory — a victory won with great losses to the victors
  • cairngorm-stone — smoky quartz.
  • calcium blocker — any of a group of drugs that prevent the influx of calcium into excitable tissues such as smooth muscle of the heart or arterioles, used in the treatment of angina, hypertension, and certain arrhythmias.
  • calcium carbide — a grey salt of calcium used in the production of acetylene (by its reaction with water) and calcium cyanamide. Formula: CaC2
  • calcium citrate — the calcium salt of citric acid, used as a food additive
  • calcium nitrate — a white, deliquescent solid, Ca(NO 3) 2 , used chiefly in the manufacture of fertilizers, fireworks, matches, and explosives.
  • camelback truss — a roof truss having upper and lower chords curving upward from a common point at each side.
  • camelot library — (library)  
  • camera operator — a person who operates a film or television camera
  • camp counsellor — an adult supervisor assigned to a group of campers at a summer camp
  • campaign worker — a person who carries out duties for a political candidate or party, esp before an election
  • camphorated oil — a liniment consisting of camphor and peanut oil, used as a counterirritant
  • canterbury lamb — New Zealand lamb exported chilled or frozen to the United Kingdom
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