Aix, the Aguae Sextiae of the Romans, an ancient city giving its name to an arrondissement in the department of the Bouches-du-Rhone, France. Its hot springs were valued by the Romans, but are not much used at present. Aix was renowned as a seat of learning under the Counts of Provence, and still possesses a fine library and an academy. There are in the streets many interesting specimens of architecture, Roman and mediaeval. Cotton and silk manufactures exist, and a large trade is carried on in corn, wine, and oil.