per·spi·ra·tion | \ˌpər-spə-ˈrā-shən \

Definition of perspiration 

1 : the action or process of perspiring

2 : a saline fluid secreted by the sweat glands : sweat

Examples of perspiration in a Sentence

She wiped the perspiration from her forehead.

Recent Examples on the Web

Technically, white clothing was supposed to be both a little more breathable and less hot than other colors; presumably, players would sweat less in their whites — and their perspiration would be not be quite so obvious, thanks to the light color. Raisa Bruner, Time, "Why Wimbledon Players Have to Wear All White," 2 July 2018 Their perspiration has become the inspiration for new generations of students including those at Liberty High School who are studying space flight and rocketry. David Taylor, Houston Chronicle, "Rocketry students at LHS shooting for the sky," 7 July 2018 On hot days, the body can lose large amounts of water through perspiration. J. Harry Jones,, "Popular trails closed due to heat concerns," 5 July 2018 The opposite is true when the relative humidity decreases because the rate of perspiration increases. Cincinnati Enquirer,, "Not a dry heat: Heat index in 100s," 18 June 2018 However, sweat and perspiration needs to evaporate off our skin to complete the cooling process. Greg Porter, Washington Post, "PM Update: Mild and muggy tonight, oppressive heat and humidity Monday," 17 June 2018 On hot days, your body can lose large amounts of water through perspiration. Pomerado News, "Poway officials warn hikers as temperatures rise," 6 July 2018 Qbrexza is a cloth that can be applied to the skin daily to reduce perspiration by blocking sweat gland activation, according to an announcement from manufacturer Dermira. Jamie Ducharme, Time, "The FDA Approved a Topical Treatment for Excessive Underarm Sweating," 30 June 2018 Genius is one percent inspiration and 99 percent perspiration. Cindy Atoji Keene,, "Art ‘eats at me all day long’," 29 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'perspiration.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of perspiration

1583, in the meaning defined at sense 1

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Statistics for perspiration

Last Updated

26 Aug 2018

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Time Traveler for perspiration

The first known use of perspiration was in 1583

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English Language Learners Definition of perspiration

: the clear liquid that forms on your skin when you are hot or nervous

: the act or process of perspiring


per·spi·ra·tion | \ˌpər-spə-ˈrā-shən \

Kids Definition of perspiration

1 : the act or process of perspiring

2 : salty liquid given off from skin glands


per·spi·ra·tion | \ˌpər-spə-ˈrā-shən \

Medical Definition of perspiration 

1 : the act or process of perspiring

2 : a saline fluid that is secreted by the sweat glands, that consists chiefly of water containing sodium chloride and other salts, nitrogenous substances (as urea), carbon dioxide, and other solutes, and that serves both as a means of excretion and as a regulator of body temperature through the cooling effect of its evaporation

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Comments on perspiration

What made you want to look up perspiration? Please tell us where you read or heard it (including the quote, if possible).


to reject or criticize sharply

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