- The definition of numerous is something that has many elements or that is large in number.
When a group has 100 members, it is an example of a group that would be described as having numerous members.
Numerous people at a race track.
- consisting of many persons or things: a numerous collection
- very many
Origin of numerousClassical Latin numerosus ; from numerus, number
Origin of numerousMiddle English, from Latin numerōsus, from numerus, number; see number.