poikilotherm


poi·ki·lo·therm

noun \pi-ˈkē-lə-ˌthərm, -ˈki-\

Definition of POIKILOTHERM

:  an organism (as a frog) with a variable body temperature that tends to fluctuate with and is similar to or slightly higher than the temperature of its environment :  a cold-blooded organism
poi·ki·lo·ther·mic \ˌpi-kə-lō-ˈthər-mik\ adjective

Origin of POIKILOTHERM

Greek poikilos variegated + International Scientific Vocabulary -therm — more at paint
First Known Use: 1920

poi·ki·lo·therm

noun \ˈpi-ki-lə-ˌthərm, (ˌ)pi-ˈkil-ə-\   (Medical Dictionary)

Medical Definition of POIKILOTHERM

: an organism (as a frog) with a variable body temperature that is usually slightly higher than the temperature of its environment : a cold-blooded organism—called also heterotherm

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