Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of helicoid is as below...

Helicoid :: Helicoid (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..

Helicoid :: Helicoid (a.) Shaped like a snail shell; pertaining to the Helicidae, or Snail family..

Helicoid :: Helicoid (a.) Spiral; curved, like the spire of a univalve shell..

Helicine :: Helicine (a.) Curled; spiral; helicoid; -- applied esp. to certain arteries of the penis.

Helicoidal :: Helicoidal (a.) Same as Helicoid.

Screw :: Screw (n.) Anything shaped or acting like a screw; esp., a form of wheel for propelling steam vessels. It is placed at the stern, and furnished with blades having helicoidal surfaces to act against the water in the manner of a screw. See Screw propeller, below..

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