something added (as by growth) <this new rule restricting e-mail to job-related activity is only a supplement to the preexisting policy regarding personal use of company resources> Synonyms accretion
Related Words accumulation
something that serves to complete or make up for a deficiency in something else <recommends taking a vitamin C supplement to prevent colds>
a part added at the end of a book or periodical <a supplement containing biographical articles on women who had died since the publication of the original three-volume encyclopedia>
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