Type: Term Pronunciation: poy′ki-lō-ther′mic, -măl, -mŭs Definitions: 1. Varying in temperature according to the temperature of the surrounding medium; denoting the so-called cold-blooded animals, such as the reptiles and amphibians, and the plants. 2. Capable of existence and growth in media of varying temperatures. 3. C... Found on http://www.medilexicon.com/medicaldictionary.php?t=70538