ac·​cli·​ma·​tize | \ ə-ˈklī-mə-ˌtīz How to pronounce acclimatize (audio) \
acclimatized; acclimatizing

Definition of acclimatize

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Other Words from acclimatize

acclimatization \ ə-​ˌklī-​mə-​tə-​ˈzā-​shən How to pronounce acclimatization (audio) \ noun
acclimatizer noun

Examples of acclimatize in a Sentence

The mountain climbers spent a few days acclimatizing themselves to the high altitude. had lived through several northern winters before she fully acclimatized her wardrobe

Recent Examples on the Web

Most climbers who summit Everest spend 60 to 70 days doing so, in order to acclimatize themselves to the atmosphere at high altitudes. Taylor Kate Brown,, "Bay Briefing: A Big Tobacco redux?," 26 June 2019 Early summer heat waves can be especially lethal, as people have not yet had time to acclimatize to the higher temperatures., "Potentially historic early-summer heat wave to roast Europe," 25 June 2019 Unlike Li, many of the most promising young Chinese players have trained with foreign coaches in their teenage years, which may accelerate their development and acclimatize them to the international nature of the sport. Ben Rothenberg, New York Times, "Years After Retiring, Li Na Wields Major Influence in Tennis," 12 July 2018 Nepali mountain guides — known as Sherpa — make the first trek through the icefall each year, installing ropes and ladders and carrying gear before the first climbers begin traveling through the icefall on acclimatizing runs in April and May. Pradeep Bashyal And Annie Gowen, Washington Post, "Climate change, crowding imperil iconic route to top of Mount Everest," 16 May 2018 Having slyly acclimatized the audience to a naturalistic comedy about the frailty of memory, Albee gleefully reshuffles the cards. Jesse Green, New York Times, "Review: Glenda Jackson Gets Her Queen Lear Moment in ‘Three Tall Women’," 29 Mar. 2018 The fact that Meghan is joining in several official royal appearances underlines how quickly she is being acclimatized to the family and its public roles. Simon Perry,, "Meghan Markle Just Announced Her Biggest Royal Date Yet — with the Queen!," 2 Mar. 2018 The organizers recommend runners arrive in Leh one to two weeks before the run, to acclimatize. Nimisha Jaiswal, USA TODAY, "In a fragile ecosystem, people converge to run at 11,000 feet," 26 Sep. 2017 Both the North and South Col routes house camps at varying heights, where climbers acclimatize and refuel. Andrea Lo, CNN, "Anshu Jamsenpa: the first woman to climb Mount Everest twice in 5 days," 11 Sep. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'acclimatize.' 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 acclimatize

1802, in the meaning defined above

History and Etymology for acclimatize

ad- + climate + -ize (perhaps modeled on French acclimater) — more at acclimate

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Statistics for acclimatize

Last Updated

5 Jul 2019

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Time Traveler for acclimatize

The first known use of acclimatize was in 1802

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More Definitions for acclimatize



English Language Learners Definition of acclimatize

: to adjust or adapt to a new climate, place, or situation


ac·​cli·​ma·​tize | \ ə-ˈklī-mə-ˌtīz How to pronounce acclimatize (audio) \
acclimatized; acclimatizing

Kids Definition of acclimatize


variants: or British acclimatise \ ə-​ˈklī-​mə-​ˌtīz How to pronounce acclimatise (audio) \
acclimatized or British acclimatised; acclimatizing or British acclimatising

Medical Definition of acclimatize

transitive verb

: to adapt to a new temperature, altitude, climate, environment, or situation

Other Words from acclimatize

acclimatization or British acclimatisation \ ə-​ˌklī-​mət-​ə-​ˈzā-​shən How to pronounce acclimatisation (audio) \ noun

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Comments on acclimatize

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


to form ideas or theories about something

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