oligocene
NounUS[ol-uh-goh-seen]/ˈɑləɡoʊˌsin/4 syllables
Synonyms:
Oligocene epoch
Open English WordNet
Noun (1)
- from 40 million to 25 million years ago; appearance of sabertoothed catsSynonyms: Oligocene epochInstance of epochPart of Tertiary, Tertiary period
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Webster's Dictionary (1913)
Ol′i·go·cene adjective
Origin: Oligo- + Gr. … new, recent.
Geology Of, pertaining to, or designating, certain strata which occupy an intermediate position between the Eocene and Miocene periods. — noun The Oligocene period. See the Chart of Geology.
Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54