Accustomed, adapted or hardened to some environment(adjective)
Simple past tense and past participle of acclimate.(verb)
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Use "acclimated" in a sentence
"Those who are continually with the natives in these gatherings do get "acclimated," but I am having a hard struggle along these lines."
"After Little Wanderobo Dog became "acclimated" to the warm and friendly atmosphere of hospitality of the camp, he began to show evidences of tact and diplomacy."
"Everybody said he was "acclimated" now, and said it cheerfully."