- the rate or range of occurrence or influence of something, especially 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.
- angle of incidence(def 1).
- the fact or the manner of being incident.
- Geometry. partial coincidence of two figures, as of a line and a plane containing it.
Origin of incidence
Examples from the Web for incidences
The differences in overall victimization are driven mainly by the incidences of completed rape.College Girls Are Less Likely to Be Raped Than Non-Students
December 11, 2014
Incidences of gay men being hanged in public have been graphically reported upon.Tim Cook: Why ‘I’m Gay’ Isn’t Enough
October 30, 2014
To obviate this disturbance it is best to work at incidences as nearly as possible perpendicular.
The effect of this was to minimize digging and somewhat spread the incidences of the weight.
- degree, extent, or frequency of occurrence; amounta high incidence of death from pneumonia
- the act or manner of impinging on or affecting by proximity or influence
- physics the arrival of a beam of light or particles at a surfaceSee also angle of incidence
- geometry the partial coincidence of two configurations, such as a point that lies on a circle
Word Origin and History for incidences
early 15c., "incidental matter," from Middle French incidence (15c.), from Late Latin incidentia (see incident (n.)). Meaning "act of coming into contact with" is from 1650s; sense in physics is from 1620s.
- The extent or rate of occurrence, especially the number of new cases of a disease in a population over a period of time.
- The arrival of radiation or a projectile at a surface.