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1. Oxford Dictionary

   helix

   • IPA[ˈhiːlɪks]

   英式

   • n.
     an object having a three-dimensional shape like that of a wire wound uniformly in a single layer around a cylinder or cone, as in a corkscrew or spiral staircase.；a curve on a conical or cylindrical surface which would become a straight line if the surface were unrolled into a plane.

   • noun: helix, plural noun: helices

2. • 釋義

   n.

   名詞

   • 1. an object having a three-dimensional shape like that of a wire wound uniformly in a single layer around a cylinder or cone, as in a corkscrew or spiral staircase.
   • ▪ a curve on a conical or cylindrical surface which would become a straight line if the surface were unrolled into a plane.
   • ▪ an extended spiral chain of atoms in a protein, nucleic acid, or other polymeric molecule.
   • ▪ a spiral ornament.
   • 2. the rim of the external ear.