/ol"i goh seen'/ , Geol.
adj.
1. noting or pertaining to an epoch of the Tertiary Period, occurring from 40 to 25 million years ago. See table under geologic time .
n.
2. the Oligocene Epoch or Series.
[ 1855-60; OLIGO- + -CENE ]
/ol"i goh seen'/ , Geol.
adj.
1. noting or pertaining to an epoch of the Tertiary Period, occurring from 40 to 25 million years ago. See table under geologic time .
n.
2. the Oligocene Epoch or Series.
[ 1855-60; OLIGO- + -CENE ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012