the capacity or power of persons or things to be a compelling force on or produce effects on the actions, behavior, opinions, etc., of others: He used family influence to get the contract.
the action or process of producing effects on the actions, behavior, opinions, etc., of another or others: Her mother's influence made her stay.
a person or thing that exerts influence: He is an influence for the good.
Astrology.
the radiation of an ethereal fluid from the stars, regarded as affecting human actions and destinies.