Definition

The total number of cases of a particular condition or disease in a specific population at a certain time.

Example

The prevalence of diabetes has increased in recent years.

Conversation

Have you noticed the prevalence of allergies this season?

Yeah, it seems like everyone is sneezing these days!

I read that the prevalence is higher than last year.

That makes sense, especially with all the pollen in the air.

Synonyms & Antonyms

Root Explanation

Prevalence → It is formed from "pre-" (meaning before) and "valere" (meaning to be strong or to be worth). The word "prevalence" refers to the state of being widespread or commonly occurring, as if it has strength or worth before others.

Memory Tip

Think of something that is 'strong' or 'worthwhile' ('valere') that exists 'before' ('pre-') in many places — that's what prevalence means.

Visually Confused Words