/see'neuh zoh"ik, sen'euh-/ , Geol.
adj.
1. noting or pertaining to the present era, beginning 65 million years ago and characterized by the ascendancy of mammals. See table under geologic time .
n.
2. the Cenozoic Era or group of systems.
Also, Cainozoic .
[ 1850-55; CENO- 1 + ZO- + -IC ]