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instrumental

in·stru·men·tal

instrumental

 
 
pronunciation:
In str men tl
features:
Word Combinations (adjective)
part of speech: adjective
definition 1: serving as an agent or partial cause.
His mother was instrumental in his success as a concert pianist.This gene is instrumental in the production of an important enzyme.
similar words:
operative
definition 2: of or relating to an instrument.
definition 3: composed for or played on musical instruments .
He composed mostly instrumental pieces, but he wrote some beautiful vocal music as well.
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