mesothermic
/ˌmɛsə(ʊ)ˈθəːmɪk/Ecology
adjective
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.