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or poikilothermal

[poi-kuh-loh-thur-mik, poi-kil-uh-] /ˌpɔɪ kə loʊˈθɜr mɪk, pɔɪˌkɪl ə-/
adjective, Zoology.
cold-blooded (def 1 .) (opposed to homoiothermal).
Origin of poikilothermic
1880-85; < Greek poikílo(s) various + thermic Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for poikilothermal


(of all animals except birds and mammals) having a body temperature that varies with the temperature of the surroundings Compare homoiothermic
Derived Forms
poikilothermism, poikilothermy, noun
Word Origin
C19: from Greek poikilos various + thermal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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poikilothermal in Medicine

poikilothermic poi·ki·lo·ther·mic (poi'kə-lō-thûr'mĭk) or poi·ki·lo·ther·mal (-məl) or poi·ki·lo·ther·mous (-məs)

  1. Of or relating to an organism having a body temperature that varies with the temperature of its surroundings; cold-blooded.

  2. Capable of existing and growing in media of varying temperatures.

poi'ki·lo·ther'mi·a or poi'ki·lo·ther'mism n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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