coiled or curving like a spiral.
Geometry. a warped surface generated by a straight line moving so as to cut or touch a fixed helix.
- hel·i·coi·dal, adjective
- hel·i·coi·dal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
British Dictionary definitions for helicoid
biology shaped like a spiral: a helicoid shell
geometry any surface resembling that of a screw thread
- helicoidally, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for helicoid
Arranged in or having the approximate shape of a flattened coil or spiral curve.
A surface in the form of a coil or screw. A helicoid is generated mathematically by rotating a plane or twisted curve about an axis at a fixed rate and simultaneously translating it in the direction of the line of axis, also at a fixed rate.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.