instrumental

Serving as a means or agency; implemental.

Of, relating to, or accomplished with an instrument or tool.

Performed on or written for an instrument.

Of, relating to, or being the case used typically to express means, agency, or accompaniment.

Of or relating to instrumentalism.

The instrumental case.

A word or form in the instrumental case.

A composition for one or more instruments, usually without vocal accompaniment.

Of the nature of an instrument or tool; serving as an instrument or means; used or serving to promote or effect an object; helpful; serviceable: as, the press has been instrumental in enlarging the bounds of knowledge.