Noun
The state of being numerous; numerousness.
Rhythm; harmony; flow.
Source: Webster's dictionaryThe 23(a) criteria are referred to as numerosity, commonality, typicality, and adequacy. citation Numerosity refers to the number of people in the class. Source: Internet
There is no bright-line rule to determine numerosity, but classes with hundreds of members are generally deemed to be sufficiently numerous. Source: Internet