English Lexicon

Endothermic

/ˌɛndəˈθɜːrmɪk/
adjectiveCEFR B2 (Upper)Top #15000 frequency
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Comprehensive Definitions & Senses

2 senses
As adjective
  1. 1

    Describing a process or reaction that absorbs heat from its environment.

    "The endothermic reaction caused the temperature of the surroundings to drop significantly."
  2. 2

    Referring to organisms that generate heat internally to maintain body temperature.

    "Endothermic animals, such as mammals and birds, can regulate their body temperature regardless of the external environment."

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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The term 'endothermic' is derived from the Greek roots 'endo-' meaning 'within' and 'thermē' meaning 'heat'. It was first used in the early 20th century to describe processes that absorb heat from their surroundings.

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