poikilothermic

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poi·kil·o·therm

 (poi-kĭl′ə-thûrm′)
n.
An organism, such as a fish or reptile, having a body temperature that varies with the temperature of its surroundings.

[Greek poikilos, spotted, various; see peig- in Indo-European roots + -therm.]

poi′ki·lo·ther′mi·a (-thûr′mē-ə), poi′ki·lo·ther′my (-thûr′mē) n.
poi′ki·lo·ther′mic (-mĭk) adj.

poikilothermic

(ˌpɔɪkɪləʊˈθɜːmɪk) or

poikilothermal

adj
(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
ThesaurusAntonymsRelated WordsSynonymsLegend:
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)
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