- (n.) The act of adding two or more things together; -- opposed to subtraction or diminution.
- (n.) Anything added; increase; augmentation; as, a piazza is an addition to a building.
- (n.) That part of arithmetic which treats of adding numbers.
- (n.) A dot at the right side of a note as an indication that its sound is to be lengthened one half.
- (n.) A title annexed to a man's name, to identify him more precisely; as, John Doe, Esq.; Richard Roe, Gent.; Robert Dale, Mason; Thomas Way, of New York; a mark of distinction; a title.
- (n.) Something added to a coat of arms, as a mark of honor; -- opposed to abatement.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). addition. Retrieved September 20, 2026, from http://smartdefine.org/addition/definitions/1970826 |
| Chicago | Webster's. 2011. "addition" http://smartdefine.org/addition/definitions/1970826 (accessed September 20, 2026). |
| Harvard | Webster's 2011, addition, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/addition/definitions/1970826>. |
| MLA | Webster's. "addition" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/addition/definitions/1970826> |