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Meaning of INCIDENCE

Pronunciation:  'insiduns

WordNet Dictionary
  1. [n]  the striking of a light beam on a surface; "he measured the angle of incidence of the reflected light"
  2. [n]  the relative frequency of occurrence of something

INCIDENCE is a 9 letter word that starts with I.


 Synonyms: relative incidence
 See Also: frequency, morbidity, optical phenomenon, relative frequency



Webster's 1913 Dictionary
\In"ci*dence\, n. [Cf. F. incidence.]
1. A falling on or upon; an incident; an event. [Obs.] --Bp.

2. (Physics) 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.

{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.

Medical Dictionary
 Definition: The number of new cases of a disease diagnosed each year.
Biology Dictionary
  1. In reference to disease transmission, the number of cases of the disease in a specific subset of the population.
  2. How often a disease occurs; the number of new cases of a disease among a certain group of people for a certain period of time.
Thesaurus Terms
 Related Terms: accident, amount, coming to be, common occurrence, commonness, contingency, contingent, degree, event, eventuality, eventuation, extent, frequence, frequency, habitualness, materialization, number, occurrence, oftenness, prevalence, quantity, rate, realization, relative incidence, routineness, usualness