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Definition of instrument

instrument

/ˈɪn.strə.mənt/
in · stru · ment

Adverb:instrumentally
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Plural:instruments
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Adjective:instrumental
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Past Simple:instrumented
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Past Participle:instrumented
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Present Participle:instrumenting
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instrument Lexical Profile

instrument Game Scores & Validity

• noun

1

A device created or adapted to produce musical sounds.

Example

"Learning to play a musical instrument can greatly improve a child's cognitive development and coordination."


2

A tool or implement, especially one used for delicate, precision, or scientific work.

Example

"The surgeon selected a highly specialized optical instrument to complete the microscopic procedure."


3

A formal or legal written document that serves as evidence of an act, agreement, or contract.

Example

"The deed to the property is a binding legal instrument that explicitly proves ownership."

Synonyms
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• verb

1

To equip a system, vehicle, or facility with measuring devices or controls.

Example

"The aerospace engineers had to instrument the rocket with hundreds of thermal sensors before initiating the static fire test."


2

To arrange or score a musical composition for performance by a specific group of musicians.

Example

"She decided to instrument the delicate piano sonata for a full symphony orchestra."

Synonyms
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• Rhymes for instrument

Word Origin & Etymology

From Middle English instrument, borrowed from Old French, from Latin instrumentum ('tool, apparatus, equipment'), derived from instruere ('to build, prepare, or equip').

Cite this Entry


Wordmom. (2026). Definition of Instrument. In Wordmom Dictionary. Retrieved Oct 11, 2026, from https://wordmom.com/dictionary/instrument
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