noun
- A person who adds numbers.
- A machine that adds numbers.
- Small terrestrial viper common in northern Eurasia.
- synonyms: common viper, Vipera berus
adverb
- In the Christian era; used before dates after the supposed year Christ was born.
- usage: "in AD 200"
- synonyms: AD, A. D., anno Domini
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). Adder. Retrieved September 20, 2026, from http://smartdefine.org/adder/definitions/1196324 |
| Chicago | WordNet. 2010. "Adder" http://smartdefine.org/adder/definitions/1196324 (accessed September 20, 2026). |
| Harvard | WordNet 2010, Adder, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/adder/definitions/1196324>. |
| MLA | WordNet. "Adder" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/adder/definitions/1196324> |