ac·​cli·​ma·​tion ˌa-klə-ˈmā-shən How to pronounce acclimation (audio)
: the process or result of acclimating
especially : physiological adjustment by an organism to environmental change

Examples of acclimation in a Sentence

a period of acclimation to the region's rising temperatures
Recent Examples on the Web Founded in 1990, CSS Boston offers dozens of services to students, including personal help such as laundry, grocery shopping, banking; school assistance, from campus acclimation to tutoring to course selection; as well as housing issues such as apartment hunting and moving assistance. Abigail Adams, Peoplemag, 28 Sep. 2023 Brown was signed to the practice squad late last month, but the acclimation process should be relatively smooth for the veteran, who was with offensive coordinator Bill O’Brien in Houston. Christopher Price,, 4 Sep. 2023 From whether the front office regrets the fallout from Brunson’s departure to Josh Green’s development to Christian Wood’s acclimation and future as the sixth-man center, here are Harrison’s thoughts, lightly edited for clarity. Dallas News, 2 Dec. 2022 Yet acclimation takes time—and this is one reason heat waves tend to be deadliest at their start, especially in places where people aren’t used to hot weather. Dhruv Khullar, The New Yorker, 25 Aug. 2023 That background helped minimize Simmons’ acclimation period. Nathan Baird, cleveland, 16 Aug. 2023 Four translators help workers with forms, training and community acclimation, Sanford said. Jack Dura, Fortune, 7 Aug. 2023 An individual's reaction to extreme heat depends on their acclimation to the climate, dress, exertion level and any pre-existing conditions, according to the National Weather Service. Isabelle Butera, USA TODAY, 17 July 2023 San Pedro de Atacama is considered a gateway to this desert and the Altiplano, and that’s where my altitude acclimation began. Mark Johanson, Travel + Leisure, 29 July 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'acclimation.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


acclim(ate) + -ation

First Known Use

1801, in the meaning defined above

Time Traveler
The first known use of acclimation was in 1801

Dictionary Entries Near acclimation

Cite this Entry

“Acclimation.” Dictionary, Merriam-Webster, Accessed 4 Oct. 2023.

Medical Definition


ac·​cli·​ma·​tion ˌak-lə-ˈmā-shən, -ˌlī- How to pronounce acclimation (audio)
: acclimatization especially by physiological adjustment of an organism to environmental change
Last Updated: - Updated example sentences
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