Meaning of “incidence” in the English Dictionary

"incidence" in British English

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incidencenoun [ C usually singular ]

uk /ˈɪn.sɪ.dəns/ us /ˈɪn.sɪ.dəns/ formal

an event, or the rate at which something happens:

There have been quite a few incidences of bullying in the school this year.
an increased incidence of cancer near nuclear power stations

(Definition of “incidence” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"incidence" in American English

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incidence noun (RATE)

us /ˈɪn·sə·dəns, -ˌdens/ [ U ] the rate at which something happens:

There’s been an increased incidence of cancer in the area.

incidence noun (SURFACE)

/ˈɪn·səd·əns, -səˌdens/ [ C ] the falling or hitting of an object or beam of energy, such as light, on a surface

angle of incidence physics

The angle of incidence is the angle that a beam of light or other energy hitting a surface makes with a line vertical to that surface.

(Definition of “incidence” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"incidence" in Business English

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incidencenoun [ S ]

uk /ˈɪnsɪdəns/ us

the rate at which something happens:

increase/decrease/reduce the incidence of sth We intend to reduce the incidence of loan defaults by restructuring payments.
The incidence of financial fraud among companies having an audit decreased threefold in the last ten years.

also incidence of taxation TAX the financial effect of taxes on people or companies, especially taxes not directly paid by them:

High business property taxes added to the tax incidence on consumers by increasing the costs of goods and services.
Although mean incomes increased by 3.5% when the incidence of taxation is accounted for it leads to a 2.4% fall in mean income.

(Definition of “incidence” from the Cambridge Business English Dictionary © Cambridge University Press)