Entry 1 sense Webster, 1913 Herbivorous /hẽrb-ĭv'-ẽr-əs/ · Her·biv·o·rous · IPA /(h)ɜːɹˈbɪvəɹəs/ 01 a. Eating plants; of or pertaining to the Herbivora. 1. Eating plants; of or pertaining to the Herbivora.(Zool.)