v. & n.
v.tr. & intr. make or become greater; increase.
n. Gram. a vowel prefixed to the past tenses in the older Indo-European languages. augmented interval Mus. a perfect or major interval that is increased by a semitone. augmenter n.
[ ME f. OF augment (n.), F augmenter (v.), or LL augmentum, augmentare f. L augere increase ]