say it: in-struh-men-TAY-shuhn
instrumentation is a noun meaning "an artifact (or system of artifacts) that is instrumental in accomplishing some end". It carries 4 recorded senses.
an artifact (or system of artifacts) that is instrumental in accomplishing some end
the act of providing or using the instruments needed for some implementation
the instruments called for in a musical score or arrangement for a band or orchestra
the act of arranging a piece of music for an orchestra and assigning parts to the different musical instruments
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for instrumentation come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.