C1nounformal10K+

Prevalence

UK /["/ˈprevələns/"]/US /["/ˈprevələns/"]/

Definition

the fact of existing or being very common at a particular time or in a particular place

In simple words: How common something is.

Examples

  • an increase in the prevalence of obesity in many countries

Usage notes

Use 'prevalence' in formal contexts like academic writing or reports. Avoid in casual conversation. It implies a statistical or measured occurrence.

Grammar pattern

standalone noun

Memory hint

Think of 'pre' meaning before and 'valence' like balance; it shows how 'common' something was before!

Collocations

  • high prevalence
  • low prevalence
  • prevalence rate
  • increased prevalence
  • prevalence of disease

Synonyms

  • incidence
  • frequency
  • occurrence
  • ubiquity
  • dominance

Antonyms

  • rarity
  • uncommonness

Common mistakes

  • Confused with 'prevalent' which is an adjective.
  • Omitting the context when discussing the prevalence (e.g., 'the prevalence of diseases').
  • Using it in informal speech where simpler terms like 'common' might be better.