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WordReference Random House Learner's Dictionary of American English © 2024in•ci•dence /ˈɪnsɪdəns/USA pronunciation n. [countable* usually singular]- the rate or range of occurrence of something:a high incidence of flu.
See -cide-. WordReference Random House Unabridged Dictionary of American English © 2024in•ci•dence (in′si dəns),USA pronunciation n. - the rate or range of occurrence or influence of something, esp. of something unwanted:the high incidence of heart disease in men over 40.
- a falling upon, affecting, or befalling;
occurrence:The incidence of murder that Sunday afternoon shocked the sleepy village. - Optics, Physics
- the striking of a ray of light, beam of electrons, etc., on a surface, or the direction of striking.
- See angle of incidence (def. 1).
- the fact or the manner of being incident.
- Mathematics[Geom.]partial coincidence of two figures, as of a line and a plane containing it.
- Late Latin incidentia. See incident, -ence
- late Middle English 1375–1425
Collins Concise English Dictionary © HarperCollins Publishers:: incidence /ˈɪnsɪdəns/ n - degree, extent, or frequency of occurrence; amount: a high incidence of death from pneumonia
- the act or manner of impinging on or affecting by proximity or influence
- the arrival of a beam of light or particles at a surface
See also angle of incidence - the partial coincidence of two configurations, such as a point that lies on a circle
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