/ Dictionary / Index I instrumented: Meaning and Definition of Find definitions for: in•stru•ment•ed Pronunciation: (in'stru-men"tid), [key] — adj. equipped with instruments to perform specified functions, as testing, measurement, or control: an instrumented railroad car. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: instrumented (Thesaurus) instrumentation instrument flying Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language