Vocabulary : Helianthoidea to Helicoidal

Helianthoidea : An order of Anthozoa; the Actinaria.
Helical : Of or pertaining to, or in the form of, a helix; spiral; as, a helical staircase; a helical spring.
Helices : of Helix
Helichrysum : A genus of composite plants, with shining, commonly white or yellow, or sometimes reddish, radiated involucres, which are often called "everlasting flowers."
Heliciform : Having the form of a helix; spiral.

Helicin : A glucoside obtained as a white crystalline substance by partial oxidation of salicin, from a willow (Salix Helix of Linnaeus.)
Helicine : Curled; spiral; helicoid; -- applied esp. to certain arteries of the penis.
Helicograph : An instrument for drawing spiral lines on a plane.
Helicoid : Spiral; curved, like the spire of a univalve shell. ;; Shaped like a snail shell; pertaining to the Helicidae, or Snail family. ;; 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.
Helicoidal : Same as Helicoid.

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