augmentation
Americannoun
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the act of augmenting; state of being augmented.
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that by which anything is augmented.
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Music. modification of a theme by increasing the time value of all its notes.
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Heraldry. an addition to a coat of arms granted to a person by a sovereign power in recognition of a notable action.
noun
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the act of augmenting or the state of being augmented
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the amount by which something is increased
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music the presentation of a subject of a fugue, in which the note values are uniformly increased Compare diminution
Usage
What does augmentation mean? Augmentation is the act or process of augmenting something—adding to it in a way that makes it bigger or better.This can involve literally or figuratively increasing it in size, number, shape, value, or quality or in some other way.The augmentation of a material involves the addition of another material or substance to make it stronger. The augmentation of a museum collection involves the addition of new artifacts.The word can also refer to a thing that augments—an additional source of income is an augmentation to one’s salary.Augment and augmentation are also used in a much more specific way in the context of music, but their general senses are much more commonly used.Example: The augmentation of our emergency stockpile should be our top priority.
Etymology
Origin of augmentation
1425–75; late Middle English (< Anglo-French ) < Late Latin augmentātiōn- (stem of augmentātiō ). See augment, -ation; replacing late Middle English aumentacion < Middle French
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
This expansion adds more than 60,000 square feet to the museum, greatly expanding its exhibition space—an augmentation that has been put to full use for this maximalist show.
From The Wall Street Journal • Mar. 20, 2026
Last week, Carvalho announced an additional one-time augmentation of $50 million into the Black Student Achievement Plan, or BSAP, for the 2025-26 school year, bringing funding to $175 million.
From Los Angeles Times • Jun. 25, 2025
And the augmentation pump, that kind of life support system that they are on, is working already and there was even a sort of heart monitor device floating in the water.
From Salon • May 28, 2025
"It says I have eye bags. Get a chin augmentation? I've done that."
From BBC • Apr. 22, 2025
“Material profit. Increase of knowledge. The augmentation of the complexity and intensity of the field of intelligent life. The enrichment of harmony and the greater glory of God. Curiosity. Adventure. Delight.”
From "The Left Hand of Darkness" by Ursula K. Le Guin
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
