Helicoid
Helicoid , adjective
[Greek {not transcribed}; {not transcribed}, {not transcribed}, spiral + {not transcribed} shape: compare French hélicoide. See Helix.]
1.
Spiral; curved, like the spire of a univalve shell.
2.
(Zoology) Shaped like a snail shell; pertaining to the Helicidae, or Snail family.
Collocations (1)
Helicoid parabola (Mathematics) , the parabolic spiral.
Helicoid , noun
(Geometry) 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.