helix

he·lix

noun \ˈhē-liks\

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

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