or LEONTIUM, in Ancient Geography, a town of Sicily on the south side of the river Terias, 20 miles north-west of Syracuse. The territory, called Campi Leonini, was extremely fertile (Cicero): these were the Campi Laëtrigonii, anciently so called; the seat of the Laëtrigons, according to the commentators on the poets. The name Leonini is from Leo, the impres-