'Eozoic' definitions:

Definition of 'Eozoic'

From: GCIDE
  • Eozoic \E`o*zo"ic\, a. [See {Eozo["o]n}.] (Geol.) Of or pertaining to rocks or strata older than the Paleozoic, in many of which the eozo["o]n has been found. [1913 Webster]
  • Note: This term has been proposed for the strata formerly called Azoic, and is preferred especially by those geologists who regard the eozo["o]n as of organic origin. See Arch[ae]an. [1913 Webster]