per·​spi·​ra·​tion | \ ˌpər-spə-ˈrā-shən How to pronounce perspiration (audio) \

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

The spaces between the fibers are too small for water to penetrate but large enough for vapor from perspiration to escape. Frederick Reimers, Outside Online, "On the Slopes in the North Face Futurelight Shell," 10 June 2019 Doctors told him to avoid sweating because perspiration could infect the PICC line’s entry point, so he isn’t allowed to do cardio exercising and his strength training sessions take longer. Jorge Castillo,, "Former Diamondback A.J. Pollock gets lost at Chase Field rehabbing with Dodgers," 5 June 2019 Using a sophisticated analysis of an individual’s perspiration, the sports-drink brand plans to introduce a line of products to personalize their beverages. Ellen Byron, WSJ, "We Now Live in a World With Customized Shampoo," 17 Apr. 2019 People who have hyperhidrosis are actually most likely to sweat from their palms, feet, armpits, and head, the AAD says, and the perspiration needs to be excessive enough to interrupt your usual lifestyle. Korin Miller, SELF, "What to Do if You’re Extremely Sweaty in the General Vicinity of Your Vagina," 3 Apr. 2019 If the perspiration is not able to evaporate, the body cannot regulate its temperature. Cincinnati Enquirer,, "Not a dry heat: Heat index in 100s," 18 June 2018 Symptoms include anxiety, heat sensitivity, increased perspiration, and weight loss, among others. Selena Barrientos, Good Housekeeping, "Wendy Williams to Spend a "Significant Time" Hospitalized Due to Graves' Disease," 18 Jan. 2019 When perspiration and bacteria get trapped in the pores and cause infection due to tight or sweaty clothing. Carolyn Twersky, Seventeen, "Say "See Ya Bye" to Body Acne with These Helpful Tips," 21 Mar. 2017 The Aircomfort back system allows for better airflow, which means less perspiration and a warmer back. Timothy Dahl, Popular Mechanics, "Hike With Your Kids Using These Child Carrier Backpacks," 28 Nov. 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

17 Jun 2019

Look-up Popularity

Time Traveler for perspiration

The first known use of perspiration was in 1583

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English Language Learners Definition of perspiration

somewhat formal
: 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 How to pronounce perspiration (audio) \

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 How to pronounce perspiration (audio) \

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 move with exaggerated bouncy motions

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