Home › Words › O › osteospermumosteospermumosteospermum means any of the genus Osteospermum of subshrubs.EtymologyBorrowed from translingual Osteospermum.nounAny of the genus Osteospermum of subshrubs.e.g.“Annual geraniums and tobacco relatives like petunias, calibrachoas and nicotianas suffer most, but other flowers including osteospermums, mallows and chrysanthemums may also be attacked.” — 2007 August 23, Leslie Land, “Garden Q.&A.”, in New York Times:Definitions & examples from Wiktionary (CC BY-SA 3.0).