prevalence

Reading level: hard

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun the quality of prevailing generally; being widespread
  2. noun (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. noun a superiority in numbers or amount

Etymology

Borrowed from Middle French prévalence.

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