Lewis & Short

Jūlĭus (in poets also Ĭūlĭus, quadrisyll.), a,

  1. I. adj., name of a Roman gens; especially celebrated, C. Julius Cæsar and his adopted son, C. Julius Cæsar (Octavianus) Augustus: unde domus Teucros Julia tangit avos, Ov. F. 4, 40: templa, i. e. curia Julia, id. P. 4, 5, 21: leges, Cic. Balb. 8; id. Sest. 64: edicta, decrees and laws of Augustus, Hor. C. 4, 15, 22: sidus, id. ib. 1, 12, 47.
  2. II. Transf.: Julius mensis (or, absol., Julius), the month of July, which was previously called Quinctilis: fervens Julius, Mart. 10, 62.