Definition of poikilothermous in English:

poikilothermous

(also poecilothermous)

Pronunciation /ˌpɔɪkɪlə(ʊ)ˈθəːməs/

adjective

Zoology Physiology
  • Poikilothermic.

Origin

Late 19th century; earliest use found in Isaac Funk (1839–1912), publisher and reformer. From poikilo- + -thermous, after German pökilotherm, adjective (now poikilotherm).