an arrondissement in the department of the Yonne, in France. Its extent is 773 square miles, or 494,905 acres, divided into 12 cantons and 131 communes, with 121,539 inhabitants. The capital, of the same name, is situated on the banks of the Yonne, in a district productive of wine; and is built in an antique fashion, with an ancient cathedral and a splendid palace. It has several normal schools, a society of agriculture, botanic garden, museum, theatre, &c. The Yonne is navigable from a little above the town. Pop. in 1851, 12,673. Besides trade in wine and in fire-wood, there are manufactures of cloths, druggets, serges cotton and woollen stockings, and some considerable tanneries. Long. 3. 34. 21. E. Lat. 47. 47. 57. N.