Miocene

['maiəusi:n]

Definition

(noun.) from 25 million to 13 million years ago; appearance of grazing mammals.

Checked by Barry--From WordNet

Definition

(a.) Of or pertaining to the middle division of the Tertiary.

(n.) The Miocene period. See Chart of Geology.

Inputed by Julio

Definition

adj. (geol.) less recent applied by Lyell to the middle division of the Tertiary strata.

Inputed by Bennett

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