Sŭp'plē-ment1, n.
n. [Fr. supplément, Pr. supplément, Sp. suplemento, Pg. supplemento, It. supplemento, supplimento, Lat. supplementum, from supplere, to fill up. See SUPPLY.]
Sense 1. That which supplies a deficiency, or meets a want; a store; a supply. [Obs.] Chapman.
Sense 2. That which fills up or completes something already organized, arranged, or set apart; specifically, something added to a book or paper to make good its deficiencies or correct its errors.
Sense 3. (Trig.) The number of degrees which, if added to a specified arc, make it a semicircle; the quantity by which an arc or an angle falls short of 180 degrees or a semicircle.
Synonyms— Appendix. — APPENDIX, SUPPLEMENT. An appendix is that which is added to something, but is not essential to its completeness; a supplement is that which supplements, or serves to complete or make perfect that to which it is added.