an arrondissement of the department of the Seine, in France, to the south of Paris. It extends over 23,909 hectares, equal to 53,796 acres, or eighty-four square miles, and is divided into four cantons, and these into forty-three communes, which, in 1836, contained 67,708 inhabitants. The chief town, which is of the same name, had formerly a fine palace and park; but the orangery only now remains. It has considerable manufactories of china, and contains 1670 inhabitants.