| n. | 1. | The act of using or adapting as an instrument; a series or combination of instruments; means; agency. |
| 2. | (Mus.) 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. | |
| 4. | The act of furnishing or attaching instruments to/ | |
| 5. | The set of instruments included in a system; |
| Noun | 1. | instrumentation - an artifact (or system of artifacts) that is instrumental in accomplishing some end Synonyms: instrumentality |
| 2. | instrumentation - the act of providing or using the instruments needed for some implementation | |
| 3. | instrumentation - the instruments called for in a musical score or arrangement for a band or orchestra | |
| 4. | instrumentation - the act of arranging a piece of music for an orchestra and assigning parts to the different musical instruments Synonyms: orchestration |