coe·nu·rus (sĭ-nŏŏr'əs, -nyŏŏr'-) n.
pl.coe·nu·ri (-nŏŏr'ī', -nyŏŏr'ī') The parasitic larval stage of the tapeworm Taenia multiceps that consists of a cyst in which the scolex develops and that infects the central nervous system of ruminants, especially sheep.