diminution

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diminution

Music the presentation of the subject of a fugue, etc., in which the note values are reduced in length
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

Diminution

The decrease in size of a column toward the top; typically employed as a device to overcome or correct an optical appearance of the top being larger than the bottom.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

diminution

[‚dim·ə′nü·shən]
(botany)
Increasing simplification of inflorescences on successive branches.
(computer science)
Limiting the negative effect of an attack on a computer system.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.