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helix
(redirected from double helix)

    Also found in: Dictionary/thesaurus, Medical, Encyclopedia, Wikipedia 0.01 sec.

helix

In mathematics, a three-dimensional curve resembling a spring, corkscrew, or screw thread. It is generated by a line that encircles a cylinder or cone at a constant angle.

Helix

Genus of snails. H. hortensis is the common European snail, and H. pomatia, also found in Britain, is the Roman snail.

Classification

Helix is in subclass Pulmonata, class Gastropoda, phylum Mollusca.



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? Mentioned in ? References in periodicals archive
 
The complex geometry of the double helix twists and turns, generating a succession of oblique surfaces.
Change of gear: the evolution of motoring is vividly brought to life ... by Brensing, Christian / The Architectural Review
Thirteen chapters cover the beginnings of genetics (Mendel to Hitler), the double helix, customizing DNA molecules, biotechnology, genetically modified agriculture, evolution, the genetics of human diseases and disorders, and finally the nature/nurture argument.
Watson, James D., with Andrew Berry. DNA: The Secret of Life by Julian, Janet / Kliatt
This means the double helix "twister channels" spin the oil mist in tight spirals along their length to create turbulence and pressure that forces oil droplets against the channel walls and returns them to the crankcase.
A new twist by Automotive Design & Production
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