- (n.) The incurved margin or rim of the external ear. See Illust. of Ear.
- (n.) A caulicule or little volute under the abacus of the Corinthian capital.
- (n.) A genus of land snails, including a large number of species.
- (n.) A nonplane curve whose tangents are all equally inclined to a given plane. The common helix is the curve formed by the thread of the ordinary screw. It is distinguished from the spiral, all the convolutions of which are in the plane.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). helix. Retrieved September 22, 2026, from http://smartdefine.org/helix/definitions/2015726 |
| Chicago | Webster's. 2011. "helix" http://smartdefine.org/helix/definitions/2015726 (accessed September 22, 2026). |
| Harvard | Webster's 2011, helix, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/helix/definitions/2015726>. |
| MLA | Webster's. "helix" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/helix/definitions/2015726> |