Complementing and Supplement

noun

• Textual matter that is added onto a publication; usually at the end.
  • synonyms: addendum, postscript
• A quantity added (e. G. To make up for a deficiency.
  • synonyms: supplementation
• A supplementary component that improves capability.
  • synonyms: accessory, appurtenance, add-on

verb

• Add as a supplement to what seems insufficient.
  • usage: "supplement your diet"
• Serve as a supplement to.
  • usage: "Vitamins supplemented his meager diet"
• Add to the very end.
  • usage: "He appended a glossary to his novel where he used an invented language"
  • synonyms: append, add on, affix

• (v.t.) That which fills up, completes or makes an addition to, something already organized, arranged or set apart; specifically, a part added to or issued as a continuation of, a book or paper, to make good its deficiencies or correct its errors.
• (v.t.) To fill up or supply by addition; to add something to.
• (v.t.) The number of degrees which, if added to a specified arc, make it 180¡; the quantity by which an arc or an angle falls short of 180 degrees or an arc falls short of a semicircle.
• (v.t.) That which supplies a deficiency or meets a want; a store; a supply.