"a spiral thing," 1560s, from Latin helix "spiral," from Greek helix (genitive helikos), related to eilein "to turn, twist, roll," from PIE *wel-ik-, from root *wel- (3) "to turn, revolve" (see volvox).
例文
1. Coil the fibre into a helix .
繊維をらせん状に巻き取る。
2.Normal,double- helix DNA is spiral,like a loosely coiled spring.
正常な二重らせんDNAはらせん状で、ゆるくカールしたバネのようだ。
3.The helix makes a complete turn every 3.6 residues.
3.6残基ずつ、らせんがちょうど一周している。
4.Some biological molecules have the form of a helix .