poikilotherm

poi·kil·o·therm  (poi-kl-thûrm)

n.

An organism, such as a fish or reptile, having a body temperature that varies with the temperature of its surroundings; an ectotherm.

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

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poiki·lo·thermi·a (-thûrm-) n.

poiki·lo·thermic (-mk) adj.

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poikilotherm  (poi-kl-thûrm)

See ectotherm.

Thesaurus

Noun

1.

poikilotherm - an animal whose body temperature varies with the temperature of its surroundings; any animal except birds and mammals ectotherm animal, animate being, beast, creature, fauna, brute - a living organism characterized by voluntary movement