Dictionary

helix

noun he·lix \ˈhē-liks\

: the shape formed by a line that curves around and along a central line

plural he·li·ces \ˈhe-lə-ˌsēz, ˈhē-\ also he·lix·es \ˈhē-lik-səz\

Full Definition of HELIX

1
:  something spiral in form: as
a :  an ornamental volute
b :  a coil formed by winding wire around a uniform tube
2
:  the incurved rim of the external ear
3
:  a curve traced on a cylinder or cone by the rotation of a point crossing its right sections at a constant oblique angle; broadly :  spiral 1b
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Origin of HELIX

Latin, from Greek; akin to Greek eilyein to roll, wrap — more at voluble
First Known Use: 1563
Medical Dictionary

helix

noun he·lix \ˈhē-liks\
plural he·li·ces \ˈhel-ə-ˌsēz, ˈhē-lə-\ also he·lix·es \ˈhē-lik-səz\

Medical Definition of HELIX

1
:  the incurved rim of the external ear
2
:  a curve traced on a cylinder by the rotation of a point crossing its right sections at a constant oblique angle; broadly :  spiral 2—see alpha-helix, double helix

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