/awg'men tay"sheuhn/ , n.
1. the act of augmenting; state of being augmented.
2. that by which anything is augmented.
3. Music. modification of a theme by increasing the time value of all its notes.
4. Heraldry. an addition to a coat of arms granted to a person by a sovereign power in recognition of a notable action.
[ 1425-75; late ME ( augmentation- (s. of augmentatio ). See AUGMENT, -ATION; r. late ME aumentacion ]