Gellius, a, name of a Roman gens; so the historians, Gelii, Cic. Div. 1, 26, 55; id. Leg. 1, 2, 6: L. Gellius, a friend of Cicero, id. ib. 1, 20, 53; id. Balb. 8, 19; 14, 33; and esp.: Aulus Gellius (on account of the abbreviation A. Gellius, formerly falsely called Agellius), a grammarian of the first half of the second century of the Christian era, author of the Noctes Atticae: vir elegantissimi eloquii et multae ac facundae scientiae (Gellius), Aug. Civ. Dei, 9, 4.

— Deriv.: Gelliānus, i, m., a slave of one Gellius, Labeo ap. Gell. 13, 12, 4.