Dictionary Home »
Dictionary Definitions » helicoid
helicoid
adjective
shaped like, or coiled in the form of, a spiral, as the shell of a snail or certain inflorescences
also helicoidal
noun
Geom. a surface generated by the rotation of a plane or twisted curve about a fixed line so that each point of the curve traces out a circular helix with the fixed line as axis
See helicoid in American Heritage Dictionary 4
Learn more about helicoid