[ poi′kə-lə-thûrm′, poi-kĭl′ə- ]
An organism, such as a fish or reptile, having a body temperature that varies with the temperature of its surroundings; an ectotherm.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for poikilotherm
[ poi-kĭl′ə-thûrm′ ]
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.