Helix

Pronunciation

• IPA: /ˈhiːlɪks/
• Rhymes: -iːlɪks

Origin

From Latin helix, from Ancient Greek ἕλιξ (heliks, "something twisted or spiral").

Full definition of helix

Noun

1. (mathematics) A curve on the surface of a cylinder or cone such that its angle to a plane perpendicular to the axis is constant; the three-dimensional curve seen in a screw or a spiral staircase.
2. (architecture) A small volute under the abacus of a Corinthian capital.
3. (anatomy) The incurved rim of the external ear.
4. An upside down midair 360° spin in playboating.

Synonyms

• (curve) spiral not in technical use

Derived terms

• alpha helix
• double helix
• helical
• helically
• hemihelix

Related terms

• helicopter
• left-handed
• right-handed
• spiral