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
Variants of helicoid
helicoidalplay \ˌhe-lə-ˈkȯi-dəl, ˌhē-\
Seen and Heard
What made you want to look up helicoid? Please tell us where you read or heard it (including the quote, if possible).