WordReference Random House Unabridged Dictionary of American English © 2026
Ne•o•gene
(nē′ə jēn′),USA pronunciation [Geol.]
adj.
n.
adj.
- Geologynoting or pertaining to an interval of time corresponding to the Miocene and Pliocene epochs and accorded the status of a period when the Tertiary is considered an era. Cf. Paleogene.
n.
- Geologythe Neogene Period or System.
- neo- + -gene (see -gen) 1855–60
'Neogene' also found in these entries (note: many are not synonyms or translations):