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Definition of Instrumental
1. Adjective. Relating to or designed for or performed on musical instruments. "An instrumental ensemble"
2. Adjective. Serving or acting as a means or aid. "Instrumental in solving the crime"
Similar to: Helpful
Derivative terms: Implement, Instrument, Instrumentality, Instrumentality, Subserve
Definition of Instrumental
1. a. Acting as an instrument; serving as a means; contributing to promote; conductive; helpful; serviceable; as, he was instrumental in conducting the business.
Definition of Instrumental
1. [n -S]
Medical Definition of Instrumental
1. 1. Acting as an instrument; serving as a means; contributing to promote; conductive; helpful; serviceable; as, he was instrumental in conducting the business. "The head is not more native to the heart, The hand more instrumental to the mouth." (Shak) 2. Pertaining to, made by, or prepared for, an instrument, especially. A musical instrument; as, instrumental music, distinguished from vocal music. "He defended the use of instrumental music in public worship." "Sweet voices mix'd with instrumental sounds." (Dryden) 3. Applied to a case expressing means or agency; as, the instrumental case. This is found in Sanskrit as a separate case, but in Greek it was merged into the dative, and in Latin into the ablative. In Old English it was a separate case, but has disappeared, leaving only a few anomalous forms. Instrumental errors, those errors in instrumental measurements, etc, which arise, exclusively from want of mathematical accuracy in an instrument. Origin: Cf. F. Instrumental. Source: Websters Dictionary (01 Mar 1998)