Mathematics. The making of arithmetical figures. Obsolete.

The action of state, v. (in various senses); esp. the making of a statement or statements. Also: an instance of this.

Arithmetic, or the skills needed to practise it, esp. when taught as a subject at school. Cf. reading, n.1 1d, writing, n. 5b. Now rare.

The action, or the result, of arithmetizing, in various senses.

The action of processing large amounts of numerical data.