WordNet (r) 3.0 (2006):

processing
    n 1: preparing or putting through a prescribed procedure; "the
         processing of newly arrived immigrants"; "the processing of
         ore to obtain minerals"

Moby Thesaurus II by Grady Ward, 1.0:

88 Moby Thesaurus words for "processing":
   accounting, analysis, architecture, arrangement, assembly,
   automatic electronic navigation, basic training, braking, briefing,
   building, casting, clearing the decks, composition, computation,
   construction, conversion, coordination, crafting, craftsmanship,
   creation, cultivation, devising, elaboration, equipment, erection,
   extraction, fabrication, fact distribution, familiarization,
   fashioning, fixing, forecasts, formation, forming, formulation,
   foundation, framing, groundwork, growing, handicraft, handiwork,
   harvesting, inspection, machining, makeready, making, making ready,
   manipulation, manufacture, manufacturing, milling, mining,
   mobilization, molding, nonlinear calibrations, output measurement,
   planning, prearrangement, prefabrication, preliminaries,
   preliminary, preliminary act, preliminary step, prep, preparation,
   preparatory study, preparing, prepping, prerequisite, pretreatment,
   producing, propaedeutic, provision, raising, readying,
   record keeping, refining, shaping, smelting, spadework, steering,
   supersonic flow detection, training, treatment, trial, tryout,
   warm-up, workmanship



The Free On-line Dictionary of Computing (30 December 2018):

processing

    Performing some predefined sequence of operations on an
   input to produce an output or change of internal state; activity
   specifically involving the computer's CPU.

   The term is often qualified: "data processing" treats
   digital data, "signal processing" treats analog data
   (possibly in digital form), "word processing" takes in typed
   human language input and produces digital documents, image
   processing transforms digital images.

   (2003-10-23)