Definition

1. Noun:
   • The condition of being widespread, common, or general: The state or fact of being prevalent, dominant, or in general use or acceptance.
   • (Epidemiology) A measure of disease frequency: The proportion of a population found to have a condition (typically a disease or risk factor) at a specific point in time or over a specified period.
   • Superiority in number, amount, or degree: A preponderance or greater number or amount of something.

Examples of Usage

• General Widespread Nature:
  • The prevalence of smartphones has changed how we communicate.
  • There is a high prevalence of that fashion trend among teenagers.
• Epidemiological Context:
  • The study calculated the prevalence of diabetes in the adult population.
  • A high disease prevalence can strain healthcare systems.
• Superiority in Amount:
  • The prevalence of evidence supported the theory. (Note: This usage is formal and often synonymous with 'preponderance').

Advanced Usage

• "Point prevalence": The proportion of a population that has the condition at a specific point in time.
  • The point prevalence of the infection was measured on January 1st.
• "Period prevalence": The proportion of a population that has the condition at any time during a given period.
  • The annual period prevalence includes both old and new cases.

Variants and Related Words

• Prevalent (adjective): Widespread in a particular area or at a particular time.
  • Flu is most prevalent during the winter months.
• Prevalently (adverb): In a prevalent manner.

Synonyms

• Commonness: The state of being frequent or ordinary.
• Pervasiveness: The quality of spreading widely throughout an area or group.
• Dominance: The state of being more powerful, widespread, or noticeable.
• Preponderance (for the meaning of superiority in amount): The quality of being greater in number, quantity, or importance.

Antonyms

• Rarity: The state of being very uncommon.
• Scarcity: The state of being insufficient or in short supply.

Noun

1. a superiority in numbers or amount
   • a preponderance of evidence against the defendant
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. the quality of prevailing generally; being widespread
   • he was surprised by the prevalence of optimism about the future