The quality of being hard. / An instance of this quality; hardship. / (inorganic chemistry) The quantity of calcium carbonate dissolved in water, usually expressed in parts per million (ppm).

An English and Irish surname transferred from the given name.

plural of hardness

A surname.

plural of Hard

Alternative spelling of blowhard

(colloquial, countable) Difficulties; a difficult time; trouble. / (colloquial, uncountable) A prison term.

Alternative spelling of hard sell

A type of pronunciation change required when speaking certain Celtic languages.

To connect components by means of permanent electrical wires. / (computing) To implement a feature in hardware rather than in software so that it cannot easily be changed.