preop

[pree-op]

adjective, adverb Informal.

Origin of preop

by shortening

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

I am, in fact, typing these words while at the hospital waiting to get my pre-op workup for my second round of surgery.
Angelina’s Bold Boob Move
Michelle Cottle
May 14, 2013
My husband, Tony, and I have to be at Massachusetts General Hospital at eight-tomorrow morning for pre-op.
Telling My Kids About Cancer
Susan Conley
February 8, 2011

1913 as short for pre-operative (preparation).