n.
1.
Conversion, resolution, transmutation.
2.
Diminution, contraction, decrease, abridgment, lessening, retrenchment, abatement, decrement, curtailment, lowering.
3.
Depression, detrusion, abasement, lowering.
4.
Subjugation, conquest, subjection, mastery, subdual.
5.
( Math. ) Resolution, solution.