ceratium

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

cĕrătĭum, ii, n., = κεράτιον (St. John's bread),

a Greek weight corresponding to the Latin siliqua = 2. calculi, Auct. Ponder. in Goes. Agrar. p. 322 (in Col. 5, 10, 20, and Arb. 25, 1, written as Greek).