Etymology
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temperature (n.)

mid-15c., "fact of being tempered, proper proportion;" 1530s, "character or nature of a substance," from Latin temperatura "a tempering, moderation," from temperatus, past participle of temperare "to mix in due proportion, modify, blend; restrain oneself" (see temper (v.)). Sense of "degree of heat or cold" first recorded 1670 (Boyle), from Latin temperatura, used in this sense by Galileo. Meaning "fever, high temperature" is attested from 1898.

updated on December 15, 2015

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Definitions of temperature from WordNet

temperature (n.)
the degree of hotness or coldness of a body or environment (corresponding to its molecular activity);
temperature (n.)
the somatic sensation of cold or heat;
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.