What does "augment" mean?

Augment: (Gram.) To add an augment to.

Additional senses

  1. 2.To increase; to grow larger, stronger, or more intense; as, a stream augments by rain.
  2. 3.Enlargement by addition; increase.
  3. 4.(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 temporal augment is an increase of the quantity (time) of an initial vowel, as by changing

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