A non-repeating, vigesimal (base-20) and base-18 calendar used by the Maya and several other pre-Columbian Mesoamerican cultures

(inorganic chemistry) The compound CaCN₂ produced by reacting calcium carbide with nitrogen; it is used as a fertilizer

The republican calendar used for twelve years in revolutionary France (from late 1793 to 1805).

A calendar based on the movement of the Earth and the Moon around the Sun, which defines the year.

Alternative form of mooncalf

plural of calf raise

An exercise targeting the calf muscles where the subject raises their heel off the ground and lowers it again.

(calculus) The study of calculus from the perspective of the theory of operators.

(mathematical analysis, uncountable) The branch of mathematics that studies generalisations of calculus to allow noninteger (i.e., real or complex) powers of the differentiation operator D and the integration operator J; (countable) any one of said generalisations of calculus.

A type of chromium-tanned calfskin leather with a regular grain of rectangular lines.