首页英语词典prevalenceprevalence英英释意

prevalence

英 ['prev(ə)l(ə)ns; 'prevəl(ə)ns; 'prevələns] 美['prɛvələns]
  • n. 流行;普遍;广泛

英英释意


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"