Source : Webster's Revised Unabridged Dictionary (1913)

Instrumentation \In`stru*men*ta"tion\, n.
   1. The act of using or adapting as an instrument; a series or
      combination of instruments; means; agency.

            Otherwise we have no sufficient instrumentation for
            our human use or handling of so great a fact. --H.
                                                  Bushnell.

Source : WordNet®

instrumentation
     n 1: an artifact (or system of artifacts) that is instrumental in
          accomplishing some end [syn: {instrumentality}]
     2: the act of providing or using the instruments needed for
        some implementation
     3: the instruments called for in a musical score or arrangement
        for a band or orchestra
     4: the act of arranging a piece of music for an orchestra and
        assigning parts to the different musical instruments [syn:
         {orchestration}]