The definition of a benefactor is a person who lends support, especially financial support, to a cause.
An example of a benefactor is a person who gives a new artist money to have a gallery show.
a person who has given help, esp. financial help; patron
Origin of benefactorMiddle English ; from LL: see benefaction
One that gives aid, especially financial aid.
Origin of benefactorMiddle English, from Late Latin, from Latin benefacere, to do a service; see benefaction.