Definition of "preprocess"

preprocess

verb
third-person singular simple present preprocesses, present participle preprocessing, simple past and past participle preprocessed
1. (computing) To process in advance.
  Quotations
  If the desired result is to perform the smallest possible rotation between each pair of two orientations, you can preprocess the quaternions to achieve this.
  2001, Mark A. DeLoura, editor, Game Programming Gems 2‎, Charles River Media, Inc.
  In pattern recognition we can divide an entire task into three phases: data acquisition, data preprocessing, and decision classification.
  2002, Sing-Tze Bow, editor, Pattern Recognition and Image Preprocessing‎, Marcel Dekker, Inc.
  To obtain the same performance benefits of traditional OLAP systems, a UDM uses preprocessed aggregates.
  2006, Brian Larson, Delivering Business Intelligence with Microsoft SQL Server 2005, Osborne/McGraw-Hill