vt to add an augment to.
2. augment ·noun enlargement by addition; increase.
3. augment ·noun a vowel prefixed, or a lengthening of the initial vowel, to mark past time, as in ·gr. and ·skr. verbs.
4. augment ·vi to increase; to grow larger, stronger, or more intense; as, a stream augments by rain.
5. augment ·vt to enlarge or increase in size, amount, or degree; to swell; to make bigger; as, to augment an army by reeforcements; rain augments a stream; impatience augments an evil.