adequation

noun3

1. •
   Equivalence.
2. •
   A change in the meaning of a term depending upon context.
3. •
   (no longer used) The act of equalizing; act or result of making adequate; an equivalent.

   • The principles of logick and natural reason tell us, that there must be a just proportion and adequation between the medium by which we prove, and the conclusion to be proved. — 1603