: having a relatively uniform body temperature maintained nearly independent of the environmental temperature : warm-blooded
There are several mechanisms by which homeothermic animals increase their heat production, including shivering, sympathetic nervous system activation and stimulation of thyroid hormone secretion.J. E. Silva et al.

Examples of homeothermic in a Sentence

Recent Examples on the Web
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According to the authors, these proteins play a crucial role in regulating homeothermic heat production as natural ambient temperatures fluctuate. Scott Travers, Forbes.com, 19 Mar. 2026

Word History

First Known Use

1870, in the meaning defined above

Time Traveler
The first known use of homeothermic was in 1870

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Cite this Entry

“Homeothermic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/homeothermic. Accessed 7 Jul. 2026.

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