a dialect; a provincialism

openness, not being closed / openness, allowing free entry and exit / openness, frankness

(firefighting) a fire alarm, a fire alert, a fire warning (a sound, not a device)

(calculus) calculus of variations - The form of calculus that deals with the maxima and minima of definite integrals of functions of many variables

a unit of area (1cm × 1cm), symbol cm², (UK) square centimetre, (US) square centimeter.

a unit of area (1km x 1km), symbol km², (UK) square kilometre, (US) square kilometer.

broadcasting station: radio station, TV station, etc.

(law) common law

(law) statute law

gemstone