Main Entry: Ce·no·zo·ic

Pronunciation: \ˌsē-nə-ˈzō-ik, ˌse-\

Function: adjective

Etymology: Greek kainos + English -zoic

Date: 1841

: of, relating to, or being an era of geological history that extends from the beginning of the Tertiary period to the present time and is marked by a rapid evolution of mammals and birds and of angiosperms and especially grasses and by little change in the invertebrates; also : relating to the corresponding system of rocks — see geologic time table

— Cenozoic noun