Helix (noun)

1. A spiral shape or structure.
2. A structure in the shape of a coil or spiral, such as the spiral of DNA molecule.

Origin:

Late 16th century: via latin from greek helix 'spiral, screw'. the word helix refers to a spiral shape or structure.

Examples:

1. The helix of the staircase was a unique feature of the building, and it was one of its most attractive features.
2. The helix of the shell was a remarkable example of the beauty of nature, and it was often used as a decorative element.
3. The helix of the spring was an important component of the mechanism, as it provided the necessary tension and force.
4. The helix of the antenna was an essential part of the design, as it helped to increase the signal strength and range.
5. The helix of the DNA molecule was a fascinating topic of research, and it was a key part of the understanding of genetics and evolution.