Definitions for: Poikilothermic

[adj] of animals except birds and mammals; having body temperature that varies with the environment

Webster (1913) Definition: Poi`ki*lo*ther"mic (-th[~e]r"m[i^]k), a. [Gr.
poiki`los changeable + E. thermal, thermic.] (Physiol.)
Having a varying body temperature. See Homoiothermal.

Synonyms: cold-blooded, heterothermic, poikilothermous