(physics, pseudoscience) A perpetual motion machine that spontaneously converts thermal energy into mechanical work.

plural of Saybolt universal second

(computing, informal) The situation where a computer monitor displays a correct screen image when first switched on, but then quickly blanks out, typically associated with capacitor problems.

plural of three seconds rule

Alternative form of three-second rule

plural of foot-pound-second

plural of secondary amine

The production of carbon dioxide in sparkling wine using the méthode champenoise, or in beer using bottle conditioning / Malolactic fermentation.

(economics) An industry that processes raw materials produced by primary industry into goods suitable for tertiary industry to provide goods or services to consumers.

With lesser importance. / In a secondary manner or degree. / (obsolete) Secondly; in the second place.