noun
- A sign indicating the operation of addition. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). plus sign. Retrieved September 20, 2026, from http://smartdefine.org/plus_sign/definitions/1217667 |
| Chicago | WordNet. 2010. "plus sign" http://smartdefine.org/plus_sign/definitions/1217667 (accessed September 20, 2026). |
| Harvard | WordNet 2010, plus sign, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/plus_sign/definitions/1217667>. |
| MLA | WordNet. "plus sign" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/plus_sign/definitions/1217667> |