supplement
1. sup.ple.ment \'s*p-l*-m*nt\ \.s*p-l*-'ment-*l\ n [ME, fr. L supplementum, fr. supple-re to fill up, complete -]more at SUPPLY 1: something that completes or makes an addition 2: a continuation of a book or periodical containing corrections or additio ns 3: the amount by which an arc or an angle falls short of 180 degrees - sup.ple.men.tal aj 2. sup.ple.ment \'s*p-l*-.ment\ \.s*p-l*-.men-'ta--sh*n, -m*n-\ vt : to add to : COMPLETE - sup.ple.men.tat.ion n