- the striking of a ray of light, beam of electrons, etc., on a surface, or the direction of striking.
- angle of incidence(def 1).
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|Brandy Zadrozny|December 11, 2014|DAILY BEAST
The effect of this was to minimize digging and somewhat spread the incidences of the weight.
To obviate this disturbance it is best to work at incidences as nearly as possible perpendicular.
British Dictionary definitions for incidences
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.