helix (n.)

"a spiral thing," 1560s, originally of the volutes of Corinthian capitals, from Latin helix "spiral, a volute in architecture," from Greek helix (genitive helikos), a word used of anything in a spiral shape (an armlet, a curl of hair, the tendril of a vine, a serpent's coil), which is related to eilein "to turn, twist, roll," from PIE *wel-ik-, from root *wel- (3) "to turn, revolve," from PIE root *wel- (3) "to turn, revolve." The classical plural is helices.

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