sec I. \ˈsek\adjective Etymology: French, literally, dry — more at sack of champagne: containing three to five percent sugar by volume : slightly sweet : drier than demi-sec and sweeter than extra sec : dry II. abbreviation 1. secant 2. second; secondary 3. secretary; secretariat 4. section 5. sector 6.[Latin secundum] according to 7. secured 8. security