(a.) Pertaining to or designating, a yellow crystalline astringent acid, (NO2)3.C6H.(OH)2, obtained by the action of nitric acid on resorcin. Styphnic acid resembles picric acid, but is not bitter. It acts like a strong dibasic acid, having a series of well defined salts.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). styphnic. Retrieved September 30, 2026, from http://smartdefine.org/styphnic/definitions/2067449 |
| Chicago | Webster's. 2011. "styphnic" http://smartdefine.org/styphnic/definitions/2067449 (accessed September 30, 2026). |
| Harvard | Webster's 2011, styphnic, Smart Define, viewed 30 September, 2026, <http://smartdefine.org/styphnic/definitions/2067449>. |
| MLA | Webster's. "styphnic" 28 May 2011. Web. 30 September 2026. <http://smartdefine.org/styphnic/definitions/2067449> |