0 in the shape of a helix (= a curve that goes around a central tube or cone shape in the form of a spiral): --
DNA is a double-stranded, helical molecule that resembles a twisted rope ladder with wooden rungs.
a helical structure
helical molecules
Long pipes and spiraled, or helical, anchors hold the boardwalk in place.
Watson and Crick discovered the double helical structure of DNA.
The core of the house is built around a spectacular helical staircase.
NYA ORD
European
May 10, 2021
DAGENS ORD
Shimmer
helical