/pay"lee euh seen'/ or, esp. Brit., /pal"ee-/ , Geol.
adj.
1. noting or pertaining to an epoch of the Tertiary Period, from 65 to 55 million years ago, and characterized by a proliferation of mammals. See table under geologic time .
n.
2. the Paleocene Epoch or Series.
[ 1875-80; PALEO- + -CENE ]