prev·a·lence /ˈprɛvələn(t)s, ˈprɛvlən(t)s/
傳播,流行,普及
prev·a·lence /ˈprɛv(ə)lən(t)s/ 名詞
患病率,流行率,流行,盛行
Prev·a·lence n. The quality or condition of being prevalent; superior strength, force, or influence; general existence, reception, or practice; wide extension; as, the prevalence of virtue, of a fashion, or of a disease; the prevalence of a rumor.
The duke better knew what kind of argument were of prevalence with him. --Clarendon.
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prevalence
n 1: the quality of prevailing generally; being widespread; "he
was surprised by the prevalence of optimism about the
future"
2: (epidemiology) the ratio (for a given time period) of the
number of occurrences of a disease or event to the number
of units at risk in the population
3: a superiority in numbers or amount; "there is a
preponderance of Blacks in our prisons" [syn: preponderance]