\Aug*ment"\, v. t. [imp. & p. p. {Augmented}; p. pr. &
vb. n. {Augmenting}.] [L. augmentare, fr. augmentum an
increase, fr. augere to increase; perh. akin to Gr. ?, ?, E.
wax, v., and eke, v.: cf. F. augmenter.]
1. To enlarge or increase in size, amount, or degree; to
   swell; to make bigger; as, to augment an army by
   re["e]forcements; rain augments a stream; impatience
   augments an evil.
         But their spite still serves His glory to augment.
                                               --Milton.
2. (Gram.) To add an augment to.

\Aug*ment"\, v. i.
To increase; to grow larger, stronger, or more intense; as, a
stream augments by rain.

\Aug"ment\, n. [L. augmentum: cf. F. augment.]
1. Enlargement by addition; increase.
2. (Gram.) A vowel prefixed, or a lengthening of the initial
   vowel, to mark past time, as in Greek and Sanskrit verbs.
Note: In Greek, the syllabic augment is a prefixed ?, forming
      an intial syllable; the temporal augment is an increase
      of the quantity (time) of an initial vowel, as by
      changing ? to ?.