- the largest administrative subdivision of a department
- a municipal subdivision, as of Paris
Origin of arrondissementFrench ; from arrondir, to make round
- The chief administrative subdivision of a department in France.
- A municipal subdivision in some large French cities.
Origin of arrondissementFrench, from Old French, rounded projection on a wall, from arrondir, arrondiss-, to round out : a, to (from Latin ad-; see ad–) + rondir, to make round (from rond, round; see round1).