Meaning : The quality of prevailing generally. Being widespread.
Example :
He was surprised by the prevalence of optimism about the future.
Meaning : (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.
Meaning : A superiority in numbers or amount.
Example :
A preponderance of evidence against the defendant.
Synonyms : preponderance