[sup.ple.ment] n [ME, fr. L supplementum, fr. supplere to fill up, complete--more at supply] (14c) 1: something that completes or makes an addition "dietary ~s"
2: a part added to or issued as a continuation of a book or periodical to correct errors or make additions
3: an angle or arc that when added to a given angle or arc equals 180 degrees
[2]sup.ple.ment vt (1829): to add or serve as a supplement to "does odd jobs to ~ his income" -- sup.ple.men.ta.tion n -- sup.ple.ment.er n