Meaning of poikilothermal

poi•ki•lo•ther•mal

Pronunciation: (poi"ku-lō-thûr'mul, poi-kil"u-), [key]
— adj. Zool.
  1. cold-blooded (def. 3) (opposed to homoiothermal).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.