Inflected forms: pl. co·ry·ne·bac·te·ri·a (-tîr-) Any of various gram-positive, rod-shaped bacteria of the genus Corynebacterium, which includes many animal and plant pathogens, such as the causative agent of diphtheria.
ETYMOLOGY:
New Latin Corynbacterium, genus name : Greek korun, club; see ker-1 in Appendix I + bacterium.