[ verb awg-ment; noun awg-ment ]
/ verb ɔgˈmɛnt; noun ˈɔg mɛnt /

verb (used with object)

to make larger; enlarge in size, number, strength, or extent; increase: His salary is augmented by a small inheritance.
  1. to raise (the upper note of an interval or chord) by a half step.
  2. to double the note values of (a theme): In the fugue's development the subject is augmented.
Grammar. to add an augment to.
Heraldry. to grant an augmentation to (a coat of arms).

verb (used without object)

to become larger.


Grammar. a prefixed vowel or a lengthening of the initial vowel that characterizes certain forms in the nonpresent inflection of verbs in Greek, Sanskrit, Armenian, and Phrygian.

Nearby words

  1. aught,
  2. aughtlins,
  3. augier,
  4. augite,
  5. augitic,
  6. augmentation,
  7. augmentation mammaplasty,
  8. augmentative,
  9. augmented,
  10. augmented cognition

Origin of augment

1375–1425; late Middle English au(g)menten < Anglo-French, Middle French au(g)menter < Late Latin augmentāre to increase, derivative of augmentum an increase (aug(ēre) to increase (akin to eke1) + -mentum -ment) + -ā- thematic vowel + -re infinitive ending

1. swell. See increase. 5. increase.

Related formsaug·ment·a·ble, adjectiveun·aug·ment·a·ble, adjectiveun·aug·ment·ed, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for augmented

British Dictionary definitions for augmented


/ (ɔːɡˈmɛntɪd) /


music (of an interval) increased or expanded from the state of being perfect or major by the raising of the higher note or the dropping of the lower note by one semitoneC to G is a perfect fifth, but C to G sharp is an augmented fifth Compare diminished (def. 2)
  1. denoting a chord based upon an augmented triadan augmented seventh chord
  2. denoting a triad consisting of the root plus a major third and an augmented fifth
  3. (postpositive) (esp in jazz) denoting a chord having as its root the note specifiedD augmented
having been increased, esp in numberan augmented orchestra


verb (ɔːɡˈmɛnt)

to make or become greater in number, amount, strength, etc; increase
(tr) music to increase (a major or perfect interval) by a semitoneCompare diminish (def. 3)
(tr) (in Greek and Sanskrit grammar) to prefix a vowel or diphthong to (a verb) to form a past tense

noun (ˈɔːɡmɛnt)

(in Greek and Sanskrit grammar) a vowel or diphthong prefixed to a verb to form a past tense
Derived Formsaugmentable, adjectiveaugmentor or augmenter, noun

Word Origin for augment

C15: from Late Latin augmentāre to increase, from augmentum growth, from Latin augēre to increase

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for augmented
Online Etymology Dictionary, © 2010 Douglas Harper