The definition of numerous is something that has many elements or that is large in number.(adjective)
When a group has 100 members, it is an example of a group that would be described as having numerous members.
See numerous in Webster's New World College Dictionary
Origin: L numerosus < numerus, number
See numerous in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Latin numerōsus
Origin: , from numerus, number; see number.
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