Definition of Rodinia in US English:



  • (The name of) a supercontinent, comprising most of the continental crust of the earth, which is thought to have existed in the late Proterozoic era (approx. 1100 to 750 million years ago).


1980s. From Russian rod- in rodit′ to give birth to (Old Russian roditi; cognate with Old Church Slavonic roditi, in same sense from the same Slavonic base as Old Russian rod″ (Russian rod), Old Church Slavonic rodŭ kind, kin, genus, of uncertain origin, perhaps from an ablaut variant of the Indo-European base of ancient Greek ὀρθός) + -inia: see quot. 1989. Perhaps compare Russian rodina motherland, homeland.