Definition of megatherm in English:

megatherm

noun

Ecology
  • A plant (or other organism) requiring a very warm environment.

adjective

Ecology
  • = megathermic.

Origin

Late 19th century; earliest use found in Nature: a weekly journal of science. From French mégatherme from méga- + -therme.

Pronunciation

megatherm

/ˈmɛɡəθəːm/