Student Dictionary

One entry found for Proterozoic.
Main Entry: Pro·tero·zo·ic
Pronunciation: secondarystressprät-schwa-rschwa-primarystresszomacr-ik, secondarystresspromacrt-
Function: adjective
: of, relating to, or being an eon of geologic time between the Archean and the Phanerozoic eons that exceeds in length all of following geologic time and is marked by rocks which contain fossils indicating the existence of algae and small soft-bodied animals resembling worms and jellyfish; also : relating to the corresponding system of rocks -- see GEOLOGIC TIME table
- Proterozoic noun

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