Hello, you have come here looking for the meaning of the word regex. In DICTIOUS you will not only get to know all the dictionary meanings for the word regex, but we will also tell you about its etymology, its characteristics and you will know how to say regex in singular and plural. Everything you need to know about the word regex you have here. The definition of the word regex will help you to be more precise and correct when speaking or writing your texts. Knowing the definition ofregex, as well as those of other words, enriches your vocabulary and provides you with more and better linguistic resources.
2017, Moritz Lenz, Parsing with Perl 6 Regexes and Grammars, Apress, →ISBN, page 5:
To continue the history course from the previous section, Perl was one of the first general-purpose programming languages to bake regexes into its core functionality.