lactovegetarian UK /ˌlæk.təʊˌvɛ.d͡ʒɪˈtɛəɹi.ən/US /ˌlæk.toʊˌvɛ.d͡ʒɪˈtɛɹi.ən/adjective 1noun 1forms 1 adjective1 •Excluding meat and eggs, but including dairy products. noun1 •A person whose diet excludes meat and eggs, but includes dairy products. formslactovegetarians