Pre`ad*mis"sion (?), n. Lit., previous admission; specif. (Engin.), admission, as of steam, to the engine cylinder before the back stroke is completed, thus increasing the cushioning.

Pre`ad*mis"sion (?), n. Lit., previous admission; specif. (Engin.), admission, as of steam, to the engine cylinder before the back stroke is completed, thus increasing the cushioning.