heterotherm

(redirected from poikilotherm, ectotherm)
Also found in: Medical.

heterotherm

[′hed·ə·rə‚thərm]
(ecology)
An animal that is endothermic part of the time but can reduce metabolic heat production and lower body temperature when conservation of food energy supplies is necessary.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.