WordReference Random House Unabridged Dictionary of American English © 2026
on•o•mas•ti•con
(on′ə mas′ti kon′, -kən),USA pronunciation n.
- Linguisticsa list or collection of proper names.
- Linguisticsa list or collection of specialized terms, as those used in a particular field or subject area.
- Greek onomastikòn (bíblion) vocabulary arranged by subjects; see onomastic
- 1700–10