Algebra. A collection of symbols together expressing an algebraical quantity.

Technical uses from senses 5–7. Mathematics. (See quots.)

Mathematics. Algebra. The following of a + sign after a − sign, or vice versa, in a row of signs.

Something extra or added on; a surcharge; a bonus or increase to a salary or basic rate of pay. Also: the magnitude of such an addition or bonus.

Mathematics, etc. A sequence of symbols or linguistic elements in a definite order.

A string (string, n. 15c) contained within a larger string; a portion of a string that is itself a string.