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15-letter words containing m, o, t, r

  • 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.
  • aristotelianism — a philosophical tradition based on the wide-ranging belief system of Aristotle
  • armaments depot — a store for armaments
  • arms inspection — the official checking of a country's weapons and other military equipment, usually to check that international agreements have been respected
  • army-navy store — a retail store selling a stock of surplus army, naval, and other military apparel and goods, often at bargain rates.
  • arrondissements — Plural form of arrondissement.
  • astrodynamicist — a person who studies astrodynamics
  • astrophotometry — the measurement of the intensity of light of celestial objects.
  • at the mercy of — in the power of
  • atmospherically — pertaining to, existing in, or consisting of the atmosphere: atmospheric vapors.
  • augmented roman — a writing system based on an expanded English alphabet, consisting of 43 characters representing different phonemes of spoken English, used for teaching beginners to read. Abbreviation: I.T.A., i.t.a.
  • automata theory — the formal study of the power of computation of abstract machines
  • 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.
  • 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.
  • autotransformer — a transformer in which part of the winding is common to both primary and secondary circuits
  • badminton court — the court on which games of badminton are played
  • 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 chromate — a yellow, crystalline compound, BaCrO 4 , used as a pigment (barium yellow)
  • barothermograph — an automatic instrument for recording pressure and temperature.
  • barry mountains — a mountain range in SE Australia, in E Victoria: part of the Australian Alps
  • bathroom scales — scales typically kept in a bathroom for people to weigh themselves
  • bathythermogram — a record made by a bathythermograph.
  • beam-power tube — a vacuum tube in which the stream of electrons flowing to the plate is focused by the action of a set of auxiliary, charged elements, giving an increase in output power.
  • before the mast — as an apprentice seaman
  • bergamot orange — a small Asian spiny rutaceous tree, Citrus bergamia, having sour pear-shaped fruit
  • biogeochemistry — the science of biological, chemical, and geological aspects of the environment
  • blossom-end rot — a disease of tomato and pepper caused by a deficiency of calcium, characterized by decay at the blossom end of the fruit.
  • bohemian forest — a mountain range between the SW Czech Republic and SE Germany. Highest peak: Arber, 1457 m (4780 ft)
  • boston marriage — (especially in 19th-century New England) an intimate friendship between two women often maintaining a household together.
  • boston massacre — an outbreak (1770) in Boston against British troops, in which a few citizens were killed
  • box chronometer — a ship's chronometer, supported on gimbals in a wooden box
  • brachystomatous — having a short proboscis, as certain insects.
  • break the mould — If you say that someone breaks the mould, you mean that they do completely different things from what has been done before or from what is usually done.
  • british telecom — the popular name for British Telecommunications Group plc, the dominant fixed line telecommunications and broadband internet provider in the United Kingdom
  • 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.
  • broken pediment — a pediment, as over a doorway or window, having its raking cornice interrupted at the crown or apex.
  • brother-in-arms — a fellow soldier or comrade in a shared struggle
  • brown-tail moth — a white moth, Nygmia phaerrhoea, having a brown tuft at the end of the abdomen, the larvae of which feed on the foliage of various shade and fruit trees.
  • brownian motion — the irregular motion of small particles suspended in a liquid or a gas, caused by the bombardment of the particles by molecules of the medium: first observed by Robert Brown in 1827.
  • butcher's-broom — a liliaceous evergreen shrub, Ruscus aculeatus, that has stiff prickle-tipped flattened green stems, which resemble and function as true leaves. The plant was formerly used for making brooms
  • button mangrove — a tropical tree, Conocarpus erectus, having small, reddish, conelike fruits and bark used in tanning.
  • button mushroom — Button mushrooms are small mushrooms used in cooking.
  • cadmean victory — a victory won with great losses to the victors
  • cairngorm-stone — smoky quartz.
  • camelot library — (library)  
  • camera operator — a person who operates a film or television camera
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