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: Webster's Revised Unabridged Dictionary (1913)
 

Orchestration \Or`ches*tra"tion\, n. (Mus.) The arrangement of music for an orchestra; orchestral treatment of a composition; -- called also instrumentation.

Source: Webster's Revised Unabridged Dictionary (1913)