Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
epoch | Yes | No | No | No |
Oligocene | Yes | No | No | No |
epoch (noun) | Oligocene (noun) |
---|---|
a period marked by distinctive character or reckoned from a fixed point or event | from 40 million to 25 million years ago; appearance of sabertoothed cats |
a unit of geological time that is a subdivision of a period and is itself divided into ages | |
(astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded |