To establish or show a mutual relationship or connection between two things.
Shortened informal form of 'correlate,' from the Latin prefix co- (together) and relatus (brought together). This abbreviated form emerged in modern colloquial and technical speech.
Scientists love shortening words in the lab, so 'correl' became a casual way to talk about relationships in data—it's the kind of word you'll hear in research meetings but probably never in formal writing.
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