Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
An organism, such as a fish or reptile, having a body temperature that varies with the temperature of its surroundings.
poi′ki·lo·ther′mi·a (-thûr′mē-ə), poi′ki·lo·ther′my (-thûr′mē) n.
poi′ki·lo·ther′mic (-mĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Zoology) (of all animals except birds and mammals) having a body temperature that varies with the temperature of the surroundings. Compare homoiothermic
[C19: from Greek poikilos various + thermal]
ˌpoikiloˈthermism, ˌpoikiloˈthermy n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Switch to new thesaurus
|Adj.||1.||poikilothermic - of animals except birds and mammals; having body temperature that varies with the environment|
cold-blooded - having cold blood (in animals whose body temperature is not internally regulated)
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.