Definition of mesothermic in English:

mesothermic

Pronunciation /ˌmɛsə(ʊ)ˈθəːmɪk/

adjective

Ecology
  • Of, relating to, or designating a mesotherm; characterized by the presence of mesotherms.

Origin

Early 20th century; earliest use found in William Fisher (1846–1910). From mesotherm + -ic, in quot. 1903 translating German mesotherm.