Word:

Helicoid

Hel´i`coid
a.1.
1.Spiral; curved, like the spire of a univalve shell.
2.(Zool.) Shaped like a snail shell; pertaining to the Helicidæ, or Snail family.
Helicoid parabola
(Math.) the parabolic spiral.
n.1.(Geom.) 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.
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Helianthus annuus
Helianthus giganteus
Helianthus laetiflorus
Helianthus maximilianii
Helianthus petiolaris
Helianthus tuberosus
Helical
Helichrysum
Helichrysum bracteatum
Helichrysum secundiflorum
Helicidae
Heliciform
Helicin
Helicine
Helicobacter pylori (H. pylori)
Helicograph
-- Helicoid --
Helicoid parabola
Helicoidal
Helicon
Heliconia
Heliconian
Helicopter
Helicotrema
Helicteres
Helicteres isora
Helio-
Heliobacter
Heliobacter pylori
Heliocentric
Heliocentric longitude
heliocentric parallax
Heliocentric place
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