Definition of regex in English:

regex

(also regexp)

noun

Computing
  • A regular expression.

    • ‘And I finally use regexps instead of one-off string manipulation functions.’
    • ‘Stating a regex in terms of what you don't want to match is a bit harder.’
    • ‘This rules out a lot of potential uses, or at least relegates regexps to a helper role.’
    • ‘Despite their undeniable power, regexps aren't a procedural programming language.’
    • ‘I got the script to work, including a (for me) complicated regex that worked on the first try.’

Pronunciation:

regex

/ˈreɡeks/