INCIDENCE

incidence

(noun) the striking of a light beam on a surface; “he measured the angle of incidence of the reflected light”

incidence, relative incidence

(noun) the relative frequency of occurrence of something

Source: WordNet® 3.1


Etymology

Noun

incidence (countable and uncountable, plural incidences)

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.

(physics) The striking of radiation or a projectile upon a surface.

(epidemiology) A measure of the risk of a person developing a new condition within a specified period of time, usually a year.

(geometry) The falling of a point on a line, or a line on a plane.

Source: Wiktionary


In"ci*dence, n. Etym: [Cf. F. incidence.]

1. A falling on or upon; an incident; an event. [Obs.] Bp. Hall.

2. (Physics)

Definition: The direction in which a body, or a ray of light or heat, falls on any surface. In equal incidences there is a considerable inequality of refractions. Sir I. Newton. Angle of incidence, the angle which a ray of light, or the line of incidence of a body, falling on any surface, makes with a perpendicular to that surface; also formerly, the complement of this angle.

– Line of incidence, the line in the direction of which a surface is struck by a body, ray of light, and the like.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

16 April 2025

RACY

(adjective) marked by richness and fullness of flavor; “a rich ruby port”; “full-bodied wines”; “a robust claret”; “the robust flavor of fresh-brewed coffee”


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Coffee Trivia

According to Guinness World Records, the most massive cup of coffee contained 22,739.14 liters and was created by Alcaldía Municipal de Chinchiná (Colombia) at Parque de Bolívar, Chinchiná, Caldas, Colombia, on 15 June 2019. Fifty people worked for more than a month to build this giant cup. The drink prepared was Arabic coffee.

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