incidence
nounfeminine/ĩsiˈdẽsjɐ/high
in·ci·dên·ci·a
Definition
1. The action or effect of occurring; occurrence, frequency with which something happens. 2. (Physics) The manner in which a ray of light or other radiation strikes a surface.
The region recorded a high incidence of flu cases.
The angle of incidence of light determines the angle of reflection.
Common collocations
tax incidencehigh incidenceincidence rateangle of incidence
Etymology
Do latim incidentia, de incidere ('cair sobre, acontecer').