01 n. The quality or condition of being instrumental; that which is instrumental; anything used as a means; medium; agency.
pl.
Instrumentalities
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1.
The quality or condition of being instrumental; that which is instrumental; anything used as a means; medium; agency.“The instrumentality of faith in justification.” — Bp. Burnet.“The discovery of gunpowder developed the science of attack and defense in a new instrumentality.” — J. H. Newman.