Webster's 1913 Dictionary
VENDEMIAIRE
Ven `dé `miaire ", n. Etym: [F., fr. L. vindemia vintage. ]
Defn: The first month of the French republican calendar, dating from September 22, 1792.
Note: This calendar was substituted for the ordinary calendar, dating from the Christian era, by a decree of the National Convention in 1793. The 22d of September, 1792, which had been fixed upon as the day of the foundation of the republic, was also the date of the new calendar. In this calendar, the year, which began at midnight of the day of the autumnal equinox, was divided into twelve months of thirty days, with five additional days for festivals, and every fourth year six. Each month was divided into three decades of ten days each, the week being abolished. The names of the months in their order were, Vendémiaire, Brumaire, Frimaire Nivose, Pluviose, Ventose, Germinal, Floréal, Prairial, Messidor, Thermidor (sometimes called Fervidor ), and Fructidor. This calendar was abolished December 31, 18 5, and the ordinary one restored January 1, 18 6.
New American Oxford Dictionary
Vendemiaire
Ven de mi aire |ˌvändəˈmyer, ˌväNdā -ˌvɛndɛmˈjɛr |(also Vendémiaire ) ▶noun the first month of the French Republican calendar (1793 –1805 ), originally running from September 22 to October 21. ORIGIN French, from Latin vindemia ‘vintage. ’
Oxford Dictionary
Vendemiaire
Vendemiaire |vɛnˌdɛmɪˈɛː |(also Vendémiaire |French vɑ̃demjɛʀ |) ▶noun the first month of the French Republican calendar (1793 –1805 ), originally running from 22 September to 21 October. ORIGIN French, from Latin vindemia ‘vintage ’.
Duden Dictionary
Vendemiaire
Ven de mi aire Substantiv, maskulin , der |vãdeˈmi̯ɛːɐ̯ |lateinisch-französisch ; »Weinmonat «erster Monat des französischen Revolutionskalenders 22. September bis 21. Oktober
The Wordsmith Dictionary