plural helices /ˈhɛləˌsiːz/ also helixes plural helices /ˈhɛləˌsiːz/ also helixes Learner's definition of HELIX
[count]
: the shape formed by a line that curves around and along a central line : spiral螺旋线;螺旋形 — see also double helix — helical
/ˈhɛlɪkəl/ adjective