Classify
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late 18th century: back-formation from classification, from French, from classe ‘class’, from Latin classis ‘division’.
wiktionary
From French classifier.
etymonline
classify (v.)
"arrange in a class or classes, arrange according to common characteristics," 1782, from French classifier, from classe (see class (n.)) + -fier (see -fy). Related: Classified; classifying.
