poikilotherm

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poi·ki·lo·therm / poiˈkēləˌ[unvoicedth]ərm; -kil-/ • n. Zool. an organism that cannot regulate its body temperature except by behavioral means such as basking or burrowing. Often contrasted with homeotherm; compare with cold-blooded.DERIVATIVES: poi·ki·lo·ther·mal / ˌpoiˌkēləˈ[unvoicedth]ərməl; -ˌkil-/ adj.poi·ki·lo·ther·mic / ˌpoiˌkēləˈ[unvoicedth]ərmik; -ˌkilə-/ adj.poi·ki·lo·ther·my n.

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