Dictionaryxe•ro•ther•micPronunciation: (zēr"u-thûr'mik), [key] —adj. 1. of or pertaining to the condition of being dry and hot: a xerothermic climate. 2. adapted to an environment that is dry and hot: a xerothermic organism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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