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1. The chief administrative subdivision of a department in France.
2. A municipal subdivision in some large French cities.
[French, 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).]
(in France) n
1. (Government, Politics & Diplomacy) the largest administrative subdivision of a department
2. (Government, Politics & Diplomacy) a municipal district of certain cities, esp Paris
[C19: from arrondir to make round, from ab-1 + -rondir from rond round]
ar•ron•disse•ment(əˈrɒn dɪs mənt, ˌær ənˈdis-; Fr. a rɔ̃ disˈmɑ̃)
n., pl. -ments (-mənts; Fr. -ˈmɑ̃)
1. the largest administrative division of a French department, comprising a number of cantons.
2. an administrative district of certain large cities in France.