Webster's Revised Unabridged Dictionary · 1913

Diminution

Diminution , noun

[Latin diminutio, or perh. rather deminutio: compare French diminution. See Diminish.]

1.
The act of diminishing, or of making or becoming less; state of being diminished; reduction in size, quantity, or degree; -- opposed to augmentation or increase.
2.
The act of lessening dignity or consideration, or the state of being deprived of dignity; a lowering in estimation; degradation; abasement.
The world's opinion or diminution of me. — Eikon Basilike
Nor thinks it diminution to be ranked In military honor next. — Philips
3.
(Law) Omission, inaccuracy, or defect in a record.
4.
(Music) In counterpoint, the imitation of, or reply to, a subject, in notes of half the length or value of those the subject itself.