- (n.) The common hemlock (Conium maculatum, poison hemlock, spotted hemlock, poison parsley), a roadside weed of Europe, Asia, and America, cultivated in the United States for medicinal purpose. It is an active poison. The leaves and fruit are used in medicine.
- (n.) A genus of biennial, poisonous, white-flowered, umbelliferous plants, bearing ribbed fruit ("seeds") and decompound leaves.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). conium. Retrieved September 20, 2026, from http://smartdefine.org/conium/definitions/1990469 |
| Chicago | Webster's. 2011. "conium" http://smartdefine.org/conium/definitions/1990469 (accessed September 20, 2026). |
| Harvard | Webster's 2011, conium, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/conium/definitions/1990469>. |
| MLA | Webster's. "conium" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/conium/definitions/1990469> |