n. 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. H. Bushnell. 2. (Mus.) (a) The arrangement of a musical composition for performance by a number of different instruments; orchestration; instrumental composition; composition for an orchestra or military band. (b) The act or manner of playing upon musical instruments; performance; as, his instrumentation is perfect. 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 ] | 
