noun
1. the quality of prevailing generally; being widespread (Freq. 1)
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he was surprised by the prevalence of optimism about the future
• Hypernyms: ↑generality
• Hyponyms: ↑currency
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
• Topics: ↑epidemiology
• Hypernyms: ↑ratio
3. a superiority in numbers or amount
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a preponderance of evidence against the defendant
• Syn: ↑preponderance
• Derivationally related forms: ↑prevail, ↑preponderate (for: ↑preponderance)
Useful english dictionary. 2012.