preadmission

Short definition from Wiktionary

Adjective

1. 1
   Before admission (to a hospital, university, etc.).

Noun

1. 1
   A preadmission process; a process that precedes admission.
2. 2
   A preadmission process; a process that precedes admission: A preliminary process that precedes hospital admission for some interventional or surgical procedures.
3. 3
   Admission, as of steam, to an engine cylinder before the backstroke is completed, thus increasing the cushioning.