he·lix
noun/ˈhiːlɪks/
/ˈhiːlɪks/
(plural helices
/ˈhiːlɪsiːz/
/ˈhiːlɪsiːz/
)- a shape like a spiral or a line curved around a cylinder or cone
enlarge image螺旋（形） Word Originmid 16th cent. (in the architectural sense ‘spiral ornament’): via Latin from Greek.