(uncountable) A centigrade temperature scale having the freezing point of water defined as 0° and its boiling point defined as 100° at standard atmospheric pressure. Although formally known as the Celsius scale since 1948, centigrade is still the more commonly found term.

(countable, dated) A single degree on this scale.

(countable) A unit of angle equal to the hundredth part of a quadrant. Its symbol is gon.

(of a scale) Having 100 divisions between two fixed points.

Celsius (since 1948).