Breadcrumb Home > Dictionary > Index O onomastics: Meaning and Definition of Find definitions for: on•o•mas•tics Pronunciation: (on"u-mas'tiks), [key] — n. (used with a sing. v.) the study of the origin, history, and use of proper names. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: onomastics (Thesaurus) onomasticon onomatology TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: pernicious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language