Up:[962]= B =

backreference n.

1. In a regular expression or pattern match, the text which was
matched within grouping parentheses parentheses. 2. The part of the
pattern which refers back to the matched text. 3. By extension,
anything which refers back to something which has been seen or
discussed before. "When you said `she' just now, who were you
backreferencing?"
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backronym n.

[portmanteau of back + acronym] A word interpreted as an acronym that
was not originally so intended. This is a special case of what
linguists call `back formation'. Examples are given under [966]BASIC,
[967]recursive acronym (Cygnus), [968]Acme, and [969]mung. Discovering
backronyms is a common form of wordplay among hackers. Compare
[970]retcon.
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backspace and overstrike interj.