Proterozoic

"Proterozoic" in Russian

протерозо́йский

protɛrozójskij

(of eon from 2,500 to 541 million years ago)

протерозо́й

protɛrozój

(eon 2,500-541 Ma)

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.