/ Dictionary / Index P poikilothermal: Meaning and Definition of Find definitions for: poi•ki•lo•ther•mal Pronunciation: (poi"ku-lō-thûr'mul, poi-kil"u-), [key] — adj. Zool. cold-blooded (def. 3) (opposed to homoiothermal). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. poikiloblastic poil Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language