Ventose Syllabification: (Ven·tose)Pronunciation: /vänˈtōz/ (also Ventôse)Definition of Ventose noun the sixth month of the French Republican calendar (1793–1805), originally running from February 19 to March 20. Origin:French Ventôse, from Latin ventosus 'windy', from ventus 'wind'Ventose in other Oxford dictionaries Definition of Ventose in the British & World English dictionary