adj.
Pronunciation: ˌ s ē -n ə - ' z ō -ik, ˌ se-
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