In vacuum applications, a device that condenses all vapours except the permanent gases into a liquid or solid, typically to prevent contamination of a vacuum pump.

plural of collective investment scheme

plural of cold front

Expressing the common belief that eating more will cure the common cold, and eating less will cure a fever.

(espionage) Of a spy: to return home after having gone undercover in enemy territory. / (by extension) To gain widespread acceptance in a group or society, especially where there was not any before.

(obsolete) Dead.

(television) An opening segment shown before the opening credits.

plural of cold open

A condition in which an otherwise healthy baby cries or screams frequently and for extended periods without any discernible reason.

(simile, colloquial, vulgar, humorous) Very cold.