1. [ noun ] 1/60 of a minute; the basic unit of time adopted under the System International d'Unites
Synonyms: second s
Related terms: time_unit leap_second minute millisecond
2. [ noun ] (mathematics) ratio of the hypotenuse to the adjacent side of a right-angled triangle
Synonyms: secant
Related terms: trigonometric_function
3. [ noun ] (stock exchange,government) a United States government agency that oversees the exchange of securities to protect investors
Synonyms: securities_and_exchange_commission
Related terms: agency independent_agency
4. [ adjective ] (of champagne) moderately dry
Synonyms: unsweet
Related terms: dry
Similar spelling:   Sesco