Definition of "helix"
noun:
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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.
from Wiktionary, Creative Commons Attribution/Share-Alike License -
A small volute under the abacus of a Corinthian capital.
from Wiktionary, Creative Commons Attribution/Share-Alike License -
The incurved rim of the external ear.
from Wiktionary, Creative Commons Attribution/Share-Alike License
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