Third person singular present tense of enroll; signs someone up or registers them for a program or institution.
From Old French 'enroller,' composed of 'en-' (to cause to be) + 'rolle' (a rolled document). Originally meant to write on a roll or list.
When a school 'enrolls' a student, they're continuing a 900-year-old practice that literally meant writing names on rolls of parchment!
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