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perspiration

 
Dictionary: per·spi·ra·tion   (pûr'spə-rā'shən) pronunciation
n.
  1. The fluid, consisting of water with small amounts of urea and salts, that is excreted through the pores of the skin by the sweat glands; sweat.
  2. The act or process of perspiring.
perspiratory per·spir'a·to'ry (pər-spīr'ə-tôr'ē, -tōr'ē, pûr'spər-ə-) adj.

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Fluid given off by the skin as vapour by simple evaporation or as sweat actively secreted from sweat glands to evaporate and cool the body. When the body temperature rises, the sympathetic nervous system stimulates eccrine sweat glands to secrete water to the skin surface, where it cools the body by evaporation. Human eccrine sweat is essentially a dilute solution of sodium chloride with trace amounts of other plasma electrolytes. In extreme conditions, human beings may excrete several litres of such sweat in an hour.

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World of the Body: perspiration
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Evaporation of water from the skin surface, without the active secretion of sweat. This insensible perspiration is continuous and inevitable unless the environment is very humid, and in typical temperate zones it accounts for a loss of 300-400 ml daily in the average adult. Colloquially, the word perspiration is used euphemistically to avoid the smellier implications of sweat.

— Stuart Judge

See body fluids; sweating.

Thesaurus: perspiration
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noun

    Moisture excreted through the pores of the skin: lather, sweat. See dry/wet.

Word Tutor: perspiration
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pronunciation

IN BRIEF: Salty fluid secreted by sweat glands.

pronunciation Genius is 99 percent perspiration and 1 percent inspiration. — Thomas Edison (1847-1931)

Translations: Perspiration
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Dansk (Danish)
n. - sved

Nederlands (Dutch)
transpiratie, het transpireren

Français (French)
n. - transpiration

Deutsch (German)
n. - Transpiration, Schweiß, Schwitzen

Ελληνική (Greek)
n. - εφίδρωση, ιδρώτας

Italiano (Italian)
sudore, traspirazione

Português (Portuguese)
n. - perspiração (f), suor (m)

Русский (Russian)
пот

Español (Spanish)
n. - transpiración, sudor

Svenska (Swedish)
n. - svett, transpiration

中文(简体)(Chinese (Simplified))
汗, 努力, 流汗

中文(繁體)(Chinese (Traditional))
n. - 汗, 努力, 流汗

한국어 (Korean)
n. - 발한, 땀

日本語 (Japanese)
n. - 発汗, 汗

العربيه (Arabic)
‏(الاسم) عرق, تعرق, تعريق‏

עברית (Hebrew)
n. - ‮זיעה, הזעה‬


 
 

 

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Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.  Read more
Britannica Concise Encyclopedia. Britannica Concise Encyclopedia. © 2006 Encyclopædia Britannica, Inc. All rights reserved.  Read more
World of the Body. The Oxford Companion to the Body. Copyright © 2001, 2003 by Oxford University Press. All rights reserved.  Read more
Thesaurus. Roget's II: The New Thesaurus, Third Edition by the Editors of the American Heritage® Dictionary Copyright © 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.  Read more
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