maɪˈoʊsɪn, -oʊˈsiːn

Definitions

1. noun

a geologic epoch of the Paleogene period, extending approximately from 23 to 5.3 million years ago

“The Miocene epoch witnessed significant changes in the Earth’s climate and geography.”

2. adjective

relating to the Miocene epoch

“The Miocene flora of the region was characterized by its diverse plant species.”