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helix

noun
🔊/ˈhiːlɪks/
🔊/ˈhiːlɪks/
(plural helices
🔊/ˈhiːlɪsiːz/
🔊/ˈhiːlɪsiːz/
)
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  1. a shape like a spiral or a line curved around a cylinder or cone 螺旋（形）
    see also double helixTopics Colours and Shapesc2
    Word Originmid 16th cent. (in the architectural sense ‘spiral ornament’): via Latin from Greek.