Official permission or a formal document allowing someone, especially a student or member of an institution, to be absent or to leave temporarily.
From Latin 'exeat,' third person singular of 'exire' meaning 'let him/her go out.' Used in British educational institutions since the 17th century, particularly at boarding schools and universities.
At Oxford and Cambridge, students still sign out using the exact same permission system dating back centuries—the word is alive and well in the most traditional corners of education!
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