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v. aug·ment·ed, aug·ment·ing, aug·ments
1. To make (something already developed or well under way) greater, as in size, extent, or quantity: Continuing rains augmented the floodwaters. See Synonyms at increase.
2. Linguistics To add an augment to.
To become augmented.
Linguistics The prefixation of a vowel accompanying a past tense, especially of Greek and Sanskrit verbs.
[Middle English augmenten, from Old French augmenter, from Late Latin augmentāre, from Latin augmentum, an increase, from augēre, to increase; see aug- in Indo-European roots.]