Definitions for "Helicoid"
Spiral; curved, like the spire of a univalve shell.
Shaped like a snail shell; pertaining to the Helicidæ, or Snail family.
coiled; of a cymose inflorescence, branching repeatedly on the same side. cf. scorpioid.
Keywords:  auger, flight, section
A section of auger flight.
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.
The helicoid is one of the first minimal surfaces discovered. Its name derives from its similarity to the helix: for every point on the helicoid there is a helix contained in the helicoid which passes through that point.