supplement

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Something added to complete a thing, make up for a deficiency, or extend or strengthen the whole.
2. n. A section added to a book or document to give further information or to correct errors.
3. n. A separate section devoted to a special subject inserted into a periodical, such as a newspaper.
4. n. Mathematics The angle or arc that when added to a given angle or arc makes 180° or a semicircle. Also called supplementary angle.
5. v. To provide or form a supplement to.

Century Dictionary and Cyclopedia

1. n. An addition to anything, by which it is made more full and complete; particularly, an addition to a book or paper.
2. n. Store; supply.
3. n. In trigonometry, the quantity by which an angle or an arc falls short of 180° or a semicircle. Hence, two angles which are together equal to two right angles, or two arcs which are together equal to a semicircle, are the supplements of each other.
4. n. Synonyms Appendix, Supplement. An appendix contains additional matter, not essential to the completeness of the principal work, but related to it; a supplement contains additional material, completing or improving the principal work.
5. To fill up or supply by additions; add something to, as to a writing, etc.; make up deficiencies in.
6. n. In algebra, the supplement of any multiplicative combination E_m of the reference elements e₁, e₂ … e_n and of the m th order is that multiplicative combination E_n–m of the (n–m)th order which contains those reference elements omitted from E_m multiplied in such succession that (E_mE_n–m) = 1. The supplement of E_m is denoted by | E_m.

Wiktionary

1. n. Something added, especially to make up for a deficiency.
2. n. An extension to a document or publication that adds information, corrects errors or brings up to date.
3. n. An additional section of a newspaper devoted to a specific subject.
4. n. geometry An angle that, when added to a given angle, makes 180°; a supplementary angle.
5. n. nutrition, bodybuilding : A vitamin, herbal extract, or chemical compound included with a diet to enhance muscular development.
6. v. To provide or make a supplement to something.

GNU Webster's 1913

1. n. obsolete That which supplies a deficiency, or meets a want; a store; a supply.
2. n. 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.
3. n. (Trig.) 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.
4. v. To fill up or supply by addition; to add something to.

WordNet 3.0

1. v. add to the very end
2. v. serve as a supplement to
3. n. a quantity added (e.g. to make up for a deficiency)
4. v. add as a supplement to what seems insufficient
5. n. textual matter that is added onto a publication; usually at the end
6. n. a supplementary component that improves capability