Regular Expression Definition

noun

(computing theory) A concise description of a regular formal language with notations for concatenation, alternation, and iteration (repetition) of subexpressions.

Wiktionary

(computing more generally) Any pattern for text matching or searching, frequently offering more or less functionality than a theoretical regular expression.

Wiktionary

Other Word Forms of Regular Expression

Noun

Singular:
Regular Expression
Plural:
regular-expressions

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