ovo-vegetariannoun [ C ]
uk/ˌəʊ.vəʊ.vedʒ.ɪˈteə.ri.ən//ˌoʊ.voʊ.vedʒ.ɪˈter.i-/a person who does not eat meat, fish, or dairy products (= milk or foods made from milk) but does eat eggs
Compare
lacto-vegetarian
ovo-vegetarian
adjective
an ovo-vegetarian diet