Definition of "numerosity" [nu•mer•os•i•ty]

• The condition of being numerous (noun)
• The extent to which something is numerous (noun)

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• "During his decade in politics, Mr. Spitzer spoke in paragraphs and peppered his speech with words like "numerosity," "academician" and "outcome-determinative.""
• "It would be a much smaller class, but probably still satisfy numerosity, right?"
• "My gut feeling is that he would not be able to round up more than a dozen or so and that class action would fail for lack of numerosity."