Breadcrumb Home > Thesaurus > I Synonyms of incidence Find synonyms for: Noun 1. incidence, relative incidence, frequency, relative frequency usage: the relative frequency of occurrence of something 2. incidence, optical phenomenon usage: the striking of a light beam on a surface; "he measured the angle of incidence of the reflected light" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of incidence (Dictionary) 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: pinguid Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language