1. (n.) The act of using or adapting as an instrument; a series or combination of instruments; means; agency.

2. (n.) 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. (n.) The act or manner of playing upon musical instruments; performance; as, his instrumentation is perfect.

adaptation agency agent appraisal appraisement approximation arrangement assessment assize assizement calculation channel computation correction determination estimate estimation evaluation gauging harmonization industrial instrumentation instrument instrumentality intonation mean measure measurement measuring medium mensuration metric system ministry missilery modulation orchestration organ phrasing preparation quantification quantization rating resolution rocketry setting solution survey surveying suspension telemetering telemetry tone painting tooling transcription triangulation valuation vehicle