Entomophaga \En`to*moph"a*ga\, n. pl. [NL., fr. Gr. 'e`ntomon an insect + fagei^n to eat.] (Zo["o]l.) 1. a group of hymenopterous insects whose larv[ae] feed parasitically upon living insects. See {Ichneumon}, 2. [1913 Webster] 2. A group of marsupials which are partly insectivorous, as the opossum. [1913 Webster] 3. A group of edentates, including the ant-eaters. [1913 Webster]