What is the meaning of Incidence?

The act of something happening; occurrence.

The extent or the relative frequency of something happening.

The manner of falling; bearing or onus, as of a tax that falls unequally.

The striking of radiation or a projectile upon a surface.

A measure of the rate of new occurrence of a given medical condition in a population within a specified period of time.

The falling of a point on a line, or a line on a plane.

The relation between an edge of a graph and one of the vertices it connects.

incidence

impact, effect, consequence

incidence

incident; event; occurrence

Source: wiktionary.org