taeniaEnglishOxford New American Dictionarytaenia /ˈtēnēə, ˈtiniə / (US also tenia) ▸ noun (plural taeniae /-nēˌē, -nēˌī/ or taenias) 1 Anatomy a flat ribbon-like structure in the body. ▪ (taeniae coli /ˈkōlī/) the smooth longitudinal muscles of the colon. 2 Architecture a fillet between a Doric architrave and frieze. 3 (in ancient Greece) a band or ribbon worn around a person's head. 4 a large tapeworm which parasitizes mammals. Genus Taenia, class Cestoda: several species, in particular T. saginata and T. soleum. – DERIVATIVES taenioid /-nēˌoid/ (US also tenioid) adjective– ORIGIN mid 16th century (in taenia (SENSE 2)): via Latin from Greek tainia ‘band, ribbon’.