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English definition of “helix”

helix

noun [C]     /ˈhiː.lɪks/ (plural helices) specialized
a curve that goes around a central tube or cone shape in the form of a spiralBends, loops and curves helical     /-lɪ.kəl/ adjective specialized in the shape of a helix: helical molecules a helical structureProperties of circles and curves
(Definition of helix noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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