'Messidor' definitions:

Definition of 'Messidor'

(from WordNet)
noun
Tenth month of the Revolutionary calendar (June and July); the month of harvest

Definition of 'Messidor'

From: GCIDE
  • Messidor \Mes`si`dor"\ (F. ?; E. ?), n. [F., fr. L. messis harvest.] The tenth month of the French republican calendar dating from September 22, 1792. It began June 19, and ended July 18. See Vend['e]miaire. [1913 Webster]