admission (n.)youdaoicibaDictYouDict[admission 词源字典]
early 15c., "acceptance, reception, approval," from Latin admissionem (nominative admissio) "a letting in," noun of action from past participle stem of admittere (see admit). Meaning "an acknowledging" is from 1530s. Sense of "a literal act of letting in" is from 1620s. As short for admission price, by 1792.[admission etymology, admission origin, 英语词源]