incidence

• Nom désignant la fréquence ou le taux auquel quelque chose se produit, en particulier un événement ou une condition médicale.

A noun referring to the rate or frequency at which something, especially an event or condition, occurs or happens.

1. Frequency of occurrenceB2formal

   The rate or extent to which something happens or is present.

   incidence (fréquence d'apparition)

   • The incidence of flu cases increases during winter.
   • Researchers studied the incidence of heart disease in the population.
   • There is a high incidence of crime in that area.

   Synonymesamountextentfrequencyoccurrenceprevalencerate

2. Striking of a light beamC1formalscientific

   The arrival of a ray of light, or other radiation, at a surface.

   Incidence d'un rayon lumineux

   • The angle of incidence determines how much light is reflected.
   • The incidence of the laser beam on the mirror was carefully measured.
   • In optics, the incidence of light is studied at various angles.

   Synonymesarrivalfallinghittingimpingementstriking