proliferousPronunciation: /prəˈlɪf(ə)rəs/Definition of proliferous adjective Biology (of a plant) producing buds or side shoots from a flower or other terminal part. (of a plant or invertebrate) propagating or multiplying by means of buds or offsets. Origin: mid 17th century: from Latin proles 'offspring' + -ferousproliferous in other Oxford dictionaries Definition of proliferous in the US English dictionary