prostomium

Pro*sto"mi*um, n.; pl. Prostomia. Etym: [NL., fr. Gr. (Zoöl.) Defn: That portion of the head of an annelid situated in front of the mouth. -- Pro*sto"mi*al, a.

prostomium - Similar Words

peristomium tomium ostium osmium propodium pretorium pastorium prothalamium praseodymium postliminium