Real Dictionary

augment
verb: To augment something means to make it larger, stronger, or more effective by adding something to it.

augment in American English
an increase
to become greater; increase
to make greater, as in size, quantity, or strength; enlarge
intransitive verb: to become larger
noun: a prefixed vowel or a lengthening of the initial vowel that characterizes certain forms in the nonpresent inflection of verbs in Greek, Sanskrit, Armenian, and Phrygian
transitive verb: to make larger; enlarge in size, number, strength, or extent; increase

augment in British English
noun: (in Greek and Sanskrit grammar) a vowel or diphthong prefixed to a verb to form a past tense
verb: to make or become greater in number, amount, strength, etc; increase