or Vitry-sur-Marne, an arrondissement in the department of Marne, which extends over 608½ square miles, and is divided into five cantons, and 133 communes, which in 1836 contained 50,527 inhabitants. The city stands near the junction of the rivers Orne and Marne. It is strongly fortified, tolerably well built, and had a population in 1836 of 6822. Lat. 48° 40'. Long. 4° 33'. east.