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trough

trough / trôf/ • n. a long, narrow open container for animals to eat or drink out of: a water trough. ∎  a container of a similar shape used for a purpose such as growing plants or mixing chemicals. ∎  a channel used to convey a liquid. ∎  a long hollow in the earth's surface: a vast glacial trough. ∎  an elongated region of low atmospheric pressure. ∎  a hollow between two wave crests in the sea. ∎  a low level of economic activity. ∎  Math. a region around the minimum on a curve of variation of a quantity. ∎  a point of low achievement or satisfaction: learning a language is a series of peaks and troughs.

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"trough." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 15 Dec. 2017 <http://www.encyclopedia.com>.

"trough." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (December 15, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/trough-0

"trough." The Oxford Pocket Dictionary of Current English. . Retrieved December 15, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/trough-0

trough

trough
1. An extension of low atmospheric pressure from the central regions of a low-pressure system into a zone where generally higher pressure prevails. The term ‘trough’ is also, and in accordance with this definition, applied to equatorward meanders of the flow of the upper westerly winds over middle latitudes. (The ‘equatorial trough’, where trade winds meet, is synonymous with the ‘intertropical convergence zone’.) See also LONG WAVE.

2. The lowest point of a fold surface.

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"trough." A Dictionary of Earth Sciences. . Encyclopedia.com. 15 Dec. 2017 <http://www.encyclopedia.com>.

"trough." A Dictionary of Earth Sciences. . Encyclopedia.com. (December 15, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/trough

"trough." A Dictionary of Earth Sciences. . Retrieved December 15, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/trough

trough

trough
1. An extension of low atmospheric pressure from the central regions of a low-pressure system into a zone where generally higher pressure prevails.

2. A meander towards the equator in the flow of the upper westerly winds over middle latitudes. (The ‘equatorial trough’, where trade winds meet, is synonymous with the intertropical convergence zone’.)

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"trough." A Dictionary of Ecology. . Encyclopedia.com. 15 Dec. 2017 <http://www.encyclopedia.com>.

"trough." A Dictionary of Ecology. . Encyclopedia.com. (December 15, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/trough-0

"trough." A Dictionary of Ecology. . Retrieved December 15, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/trough-0

trough

trough oblong open vessel, esp. to contain liquid OE.; channel, pipe XIV; hollow, valley XVI; t. of the sea hollow on the surface between waves XVII. OE. trog = OS. trog, OHG. troc (Du., G. trog), ON. trog :- Gmc. *truzaz :- IE. *drukós, f. *dru- wood, TREE.

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"trough." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. 15 Dec. 2017 <http://www.encyclopedia.com>.

"trough." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. (December 15, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/trough-1

"trough." The Concise Oxford Dictionary of English Etymology. . Retrieved December 15, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/trough-1

trough

trough In meteorology, area of low atmospheric pressure, usually an extension to a depression. The opposite are ridges of high pressure.

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"trough." World Encyclopedia. . Encyclopedia.com. 15 Dec. 2017 <http://www.encyclopedia.com>.

"trough." World Encyclopedia. . Encyclopedia.com. (December 15, 2017). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/trough

"trough." World Encyclopedia. . Retrieved December 15, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/trough

trough

troughboff, cough, doff, far-off, off, quaff, roll-on roll-off, scoff, telling-off, toff, trough •lay-off, payoff, playoff •show-off • Khrushchev • Gorbachev •stand-off • Meyerhof • Cracow •Schwarzkopf • Chekhov • Cherenkov •take-off • kick-off • Kalashnikov •Baryshnikov • Rimsky-Korsakov •Kirchhoff • Karloff • Wolof • spin-off •Rachmaninov • Ustinov • Godunov •Stroganoff • Romanov • rip-off •eavestrough • Sakharov • cut-off •Molotov

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"trough." Oxford Dictionary of Rhymes. . Encyclopedia.com. 15 Dec. 2017 <http://www.encyclopedia.com>.

"trough." Oxford Dictionary of Rhymes. . Encyclopedia.com. (December 15, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/trough

"trough." Oxford Dictionary of Rhymes. . Retrieved December 15, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/trough