helicoid

adjective
he·​li·​coid | \ ˈhe-lə-ˌkȯid How to pronounce helicoid (audio) , ˈhē-\
variants: or helicoidal \ ˌhe-​lə-​ˈkȯi-​dᵊl How to pronounce helicoidal (audio) , ˌhē-​ \

Definition of helicoid

1 : forming or arranged in a spiral
2 : having the form of a flat coil or flattened spiral helicoid snail shell

First Known Use of helicoid

circa 1704, in the meaning defined at sense 1

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More Definitions for helicoid

helicoid

adjective
he·​li·​coid | \ ˈhel-ə-ˌkȯid How to pronounce helicoid (audio) , ˈhē-lə- How to pronounce helicoid (audio) \
variants: or helicoidal \ ˌhel-​ə-​ˈkȯid-​ᵊl How to pronounce helicoidal (audio) , ˌhē-​lə-​ How to pronounce helicoidal (audio) \

Medical Definition of helicoid

1 : forming or arranged in a spiral
2 : having the form of a flat coil or flattened spiral