n. Lit., previous admission; specif. (Engin.), admission, as of steam, to the engine cylinder before the back stroke is completed, thus increasing the cushioning. [ Webster 1913 Suppl. ]
n. The act of admitting again, or the state of being readmitted; as, the readmission of fresh air into an exhausted receiver; the readmission of a student into a seminary. [ 1913 Webster ]