ectotherm

noun
ec·​to·​therm | \ ˈek-tə-ˌthərm How to pronounce ectotherm (audio) \

Definition of ectotherm

: a cold-blooded animal : poikilotherm

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Other Words from ectotherm

ectothermic \ ˌek-​tə-​ˈthər-​mik How to pronounce ectothermic (audio) \ adjective

Examples of ectotherm in a Sentence

Recent Examples on the Web

Fish are ectotherms, which means their body temperature relies very much on the temperature of the water around them. Jacqueline Detwiler, Popular Mechanics, "What Will Be the Last Fish?," 10 Dec. 2018 Because reptiles are ectotherms, their body temperature is controlled by whatever’s around them, says Refsnider. Jason Bittel, National Geographic, "Chameleon Mummified Alive by the Tropical Sun," 20 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ectotherm.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of ectotherm

1940, in the meaning defined above

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Time Traveler for ectotherm

The first known use of ectotherm was in 1940

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More Definitions for ectotherm

ectotherm

noun
ec·​to·​therm | \ ˈek-tə-ˌthərm How to pronounce ectotherm (audio) \

Medical Definition of ectotherm

: a cold-blooded animal : poikilotherm

Other Words from ectotherm

ectothermic \ ˌek-​tə-​ˈthər-​mik How to pronounce ectothermic (audio) \ adjective

Comments on ectotherm

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