Calm and imperturbable, especially under pressure.

A large device, in the form of a tower-shaped building, in which warm water is cooled by evaporation caused by circulating currents of air

Global climate change in the form of declining average temperatures; which was conjectured in the 1970s.

(intransitive) To become cooler, to be reduced in temperature. / (transitive) To cause the temperature of an item to decrease. / (intransitive) To become less agitated.

(idiomatic) to act cool

plural of cool kid

(idiomatic) calm and composed in a difficult situation.

(physics) The cooling of a liquid due to the removal of the faster-moving molecules by evaporation from its surface

(physics) The cooling of a gas as it undergoes adiabatic expansion

A system for centralized removal of heat for residential and commercial cooling requirements.