equipped with instruments to perform specified functions, as testing, measurement, or control: an instrumented railroad car.

Origin of instrumented

First recorded in 1945–50; instrument + -ed3


[in-struh-muh nt]


a mechanical tool or implement, especially one used for delicate or precision work: surgical instruments.
a contrivance or apparatus for producing musical sounds: a stringed instrument.
a means by which something is effected or done; agency: an instrument of government.
a device for measuring the present value of a quantity under observation.
a mechanical or electronic measuring device, especially one used in navigation: landing a plane by instruments.
a formal legal document, as a draft or bond: negotiable instruments.
a person used by another merely as a means to some private end; tool or dupe.

verb (used with object)

to equip with instruments, as a machine or manufacturing process: to instrument a space vehicle.
to arrange a composition for musical instruments; orchestrate.

Origin of instrument

1250–1300; Middle English < Latin instrūmentum equip-ment, equivalent to instrū-, stem of instruere to equip (see instruct) + -mentum -ment; see instruct
Related formsun·der·in·stru·ment, noun

Synonyms for instrument

1. See tool. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for instrumented

orchestrate, instrument, score, adapt

Examples from the Web for instrumented

Historical Examples of instrumented

  • Off to one side he saw the launch crew moving into an instrumented dugout.

  • A few guys have tried to follow the unmanned, instrumented rockets, out to the system of Saturn.

    The Planet Strappers

    Raymond Zinke Gallun

  • The instrumented rockets didn't run into them, and they were too light to show clearly on radar.

    The Planet Strappers

    Raymond Zinke Gallun

British Dictionary definitions for instrumented


noun (ˈɪnstrəmənt)

a mechanical implement or tool, esp one used for precision worksurgical instrument
music any of various contrivances or mechanisms that can be played to produce musical tones or sounds
an important factor or agency in somethingher evidence was an instrument in his arrest
informal a person used by another to gain an end; dupe; tool
a measuring device, such as a pressure gauge or ammeter
  1. a device or system for use in navigation or control, esp of aircraft
  2. (as modifier)instrument landing
a formal legal document

verb (ˈɪnstrəˌmɛnt) (tr)

another word for orchestrate (def. 1)
to equip with instruments

Word Origin for instrument

C13: from Latin instrūmentum tool, equipment, from instruere to erect, furnish; see instruct
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for instrumented



late 13c., "musical instrument," from Old French instrument "means, device; musical instrument" (14c., earlier estrument, 13c.) and directly from Latin instrumentem "a tool, apparatus, furniture, dress, document," from instruere "arrange, furnish" (see instruct). Meaning "tool, implement, utensil" is early 14c. in English; meaning "written document by which formal expression is given to a legal act" is from early 15c.

Online Etymology Dictionary, © 2010 Douglas Harper

instrumented in Medicine




A tool or implement, as for surgery.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.