1.  instrumentation(n = noun.artifact) instrumentality - an artifact (or system of artifacts) that is instrumental in accomplishing some end; Array
is a kind of artefact, artifact
has particulars: ceramic, connecter, connection, connective, connector, connexion, container, conveyance, transport, device, equipment, furnishing, hardware, ironware, implement, means, system, toilet articles, toiletry, arms, implements of war, munition, weaponry, weapons system, medium
Derived form verb instrument₁

2.  instrumentation(n = noun.act) Array - the act of providing or using the instruments needed for some implementation; Array
is a kind of effectuation, implementation
Derived form verb instrument₁

3.  instrumentation(n = noun.communication) Array - the instruments called for in a musical score or arrangement for a band or orchestra; Array
is a kind of arrangement, musical arrangement

4.  instrumentation(n = noun.act) orchestration - the act of arranging a piece of music for an orchestra and assigning parts to the different musical instruments; Array
is a kind of arrangement, arranging, transcription
Derived form verb instrument₂

1.  The act of using or adapting as an instrument; a series or combination of instruments; means; agency. [1913 Webster]
"Otherwise we have no sufficient instrumentation for our human use or handling of so great a fact."

2.  The arrangement of a musical composition for performance by a number of different instruments; orchestration; instrumental composition; composition for an orchestra or military band.

3.  The act of using instruments to measure or control the behavior of an object, as a patient in a hospital or a machine being tested while under development. [PJC]

4.  The act of furnishing or attaching instruments to/ [PJC]

5.  The set of instruments included in a system; as, a harvester with modern instrumentation. [PJC]

instrumentation, n.
1 a the arrangement or composition of music for a particular group of musical instruments. b the instruments used in any one piece of music.
2 a the design, provision, or use of instruments in industry, science, etc. b such instruments collectively.

Etymology:
F f. instrumenter (as INSTRUMENT)