Inflected forms: pl. he·lix·es or hel·i·ces ( hl-sz, hl-) 1.Mathematics A three-dimensional curve that lies on a cylinder or cone, so that its angle to a plane perpendicular to the axis is constant. 2. A spiral form or structure. 3.Anatomy The folded rim of skin and cartilage around most of the outer ear. 4.Architecture A volute on a Corinthian or Ionic capital.
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