Preadmission

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Preadmission \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.
     [Webster 1913 Suppl.]