vegeˈtivorous,a. [Irreg. f. the stem veget- after herbivorous, etc.] Feeding on vegetables or plants. 1859Todd's Cycl.Anat. V. 304/1 The true vegetivorous genera [of marsupials] have a cæcum which is thrice as long as the body.1881Nature XXIII. 406/1 Vegetivorous snails (Lymnaeus) eating young newts.