Helical (adjective)

Having the form of a helix or spiral.

Origin:

From helix, from greek helix 'spiral', from helissein 'to turn, twist'. ultimately from the same indo-european root as heel.

Examples:

1. The helical staircase was a masterpiece of engineering.
2. The helical DNA molecule was a fundamental discovery in genetics.
3. The helical spring provided the necessary tension for the mechanism to work.
4. The helical gears were used to transmit power and control speed.
5. The helical antenna was used to transmit signals over long distances.