decem virī or decemvirī (xvirī) ūm or (in L.) ōrum, m I. Plur, a commission of ten men, college of ten magistrates, decemviri, decemvirs.
— 1. The composers of the Twelve Tables (chosen B.C. 451): ut xviri maximā potestate sine provocatione crearentur.
—2. A tribunal for deciding causes involving liberty or citizenship, called decem viri stlitibus iudicandis.
—3. A commission for distributing public lands: legibus agrariis curatores constituti sunt ... xviri: decemviros agro Samniti creare, L.
—4. A college of priests in charge of the Sibylline books: decemviri sacrorum, L.: sacris faciundis, L.
—II. Sing: decemvir or xvir, a member of a decemviral college: ut is xvir sit: Iulius decemvir, L.