Home › Words › O › ovariumovarium/ə(ʊ)ˈvɛːrɪəm/ovarium · noun — an ovary.Definition from Wiktionary (CC BY-SA 3.0).ovarium is pronounced /ə(ʊ)ˈvɛːrɪəm/.EtymologyFrom New Latin. Doublet of ovary.nounAn ovary.e.g.“[…] racemes axillary, suprafoliaceous; ovarium glabrous.” — 1834, George Don, A General System of Gardening and Botany, page 837:Definitions & examples from Wiktionary (CC BY-SA 3.0).