- (a.) Having the whorls of the spire revolving or rising to the left; reversed; -- said of certain spiral shells.
- (a.) Of or pertaining to the left, inclining to the left; sinistrous; -- opposed to dextral.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). sinistral. Retrieved September 22, 2026, from http://smartdefine.org/sinistral/definitions/2062285 |
| Chicago | Webster's. 2011. "sinistral" http://smartdefine.org/sinistral/definitions/2062285 (accessed September 22, 2026). |
| Harvard | Webster's 2011, sinistral, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/sinistral/definitions/2062285>. |
| MLA | Webster's. "sinistral" 28 May 2011. Web. 22 September 2026. <http://smartdefine.org/sinistral/definitions/2062285> |