- (a.) Shaped like a snail shell; pertaining to the Helicidae or Snail family.
- (n.) A warped surface which may be generated by a straight line moving in such a manner that every point of the line shall have a uniform motion in the direction of another fixed straight line, and at the same time a uniform angular motion about it.
- (a.) Spiral; curved, like the spire of a univalve shell.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Helicoid. Retrieved September 25, 2026, from http://smartdefine.org/helicoid/definitions/2015688 |
| Chicago | Webster's. 2011. "Helicoid" http://smartdefine.org/helicoid/definitions/2015688 (accessed September 25, 2026). |
| Harvard | Webster's 2011, Helicoid, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/helicoid/definitions/2015688>. |
| MLA | Webster's. "Helicoid" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/helicoid/definitions/2015688> |