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Definition of precipitation - 6 dictionary results
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pre⋅cip⋅i⋅ta⋅tion

  [pri-sip-i-tey-shuhn]
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–noun
1. the act of precipitating; state of being precipitated.
2. a casting down or falling headlong.
3. a hastening or hurrying in movement, procedure, or action.
4. sudden haste.
5. unwise or rash rapidity.
6. Meteorology.
a. falling products of condensation in the atmosphere, as rain, snow, or hail.
b. the amount of rain, snow, hail, etc., that has fallen at a given place within a given period, usually expressed in inches or centimeters of water.
7. Chemistry, Physics. the precipitating of a substance from a solution.
Origin:
1425–75; late ME < L praecipitātiōn- (s. of praecipitātiō) a falling headlong. See precipitate, -ion
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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pre·cip·i·ta·tion   (prĭ-sĭp'ĭ-tā'shən)   
n.  

  1. A headlong fall or rush.

  2. Abrupt or impulsive haste.

  3. A hastening or acceleration, especially one that is sudden or unexpected: He is responsible for the precipitation of his own demise.

  4. Meteorology

    1. Any form of water, such as rain, snow, sleet, or hail, that falls to the earth's surface.

    2. The quantity of such water falling in a specific area within a specific period.

  5. Chemistry The process of separating a substance from a solution as a solid.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Cultural Dictionary

precipitation

In meteorology, the fall of water, ice, or snow deposited on the surface of the Earth from the atmosphere. In chemistry, a chemical reaction in a solution in which a solid material is formed and subsequently falls, as a precipitate, to the bottom of the container.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

precipitation 
1502, "sudden haste," from M.Fr. precipitation (15c.), from L. præcipitationem (nom. præcipitatio) "act or fact of falling headlong, haste," from præcipitare "fall, be hasty," from præceps "steep" (see precipice). Meaning "act of falling from a height" is attested from 1612. Meteorological sense of "rain, snow, dew, etc." is from 1675. Precipitous "headlong" is from 1646; precipitate (adj.) "hasty" is attested from 1654.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: pre·cip·i·ta·tion
Pronunciation: pri-"sip-&-'tA-sh&n
Function: noun
1 a : the process of forming aprecipitate from a solution b : the process of precipitating or removing solid or liquid particles from a smoke or gas by electrical means
2 : PRECIPITATE
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

precipitation pre·cip·i·ta·tion (prĭ-sĭp'ĭ-tā'shən)
n.
The process of separating a substance from a solution as a solid.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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