[noun] [C] [plural] helices [specialized] - a curve that goes around a central tube or cone shape in the form of a spiralA corkscrew is in the shape of a helix.In 1953 Watson and Crick discovered that DNA is in the form of a double helix.
HELIX
Meaning of HELIX in English
Cambridge English vocab. Кембриджский английский словарь. 2012