ac·cli·ma·tize
ə-ˈklī-mə-ˌtīz
acclimatized; acclimatizing; acclimatizes
: to adapt (someone or something) or become adapted to a new temperature, altitude, climate, environment, or situation : acclimate
… acclimatizing a tree to a new place …—Carol Cloud Bailey
Still, even climbers who work patiently at acclimatizing themselves never feel great, never feel as well and energetic as they do at sea level.—Douglas Gantenbein
When we arrived in Arequipa, which is 8,000 feet above sea level, we stopped for two days to acclimatize to the altitude.—Frederick Engle
acclimatizer
noun
ac·cli·ma·ti·za·tion
variants
also British acclimatisation
ə-ˌklī-mə-tə-ˈzā-shən
-ˌtī-ˈzā- also a-
plural -s
1
: the process of acclimatizing : the result of acclimatizing
2
ecology
: adaptation or increased tolerance of a species to a changed environment in the course of several generations compare acclimation sense 2
Cite this Entry
“Acclimatize.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acclimatize. Accessed 1 Sep. 2026.
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