incidence

Meanings

1. 1
   noun

   How often something happens, especially something unwanted.

   There has been a rise in the incidence of flu this winter.

2. 2
   noun

   The way a beam of light or radiation strikes a surface.

   She measured the angle of incidence of the reflected light.

Common collocations

• incidence angle Noun + noun

From Middle French incidence, from Medieval Latin incidentia (“a falling upon”), from Latin incidens, present participle of incidere (“to fall upon”), from in (“on”) + cadere (“to fall”).

Topics

External links

• Cambridge Dictionary
• Wiktionary
• Google Images