The term helix is used to describe a three-dimensional shape that resembles a SPIRAL or COIL. It can be found in nature, such as in the structure of DNA, and is also used in engineering and architecture. The crossword solutions for helix include SPIRAL (6 letters), COIL (4 letters), CORKSCREW (9 letters), and WHORL (5 letters). All of these words refer to a similar shape, but with slight variations. A SPIRAL is a continuous curve that winds around a central point, while a COIL is a series of connected circles. A CORKSCREW is a SPIRAL with a sharp point at the end, and a WHORL is a SPIRAL with a flat center.