helical

As the liquid dried into a film, the rodlike fibers settled into helical structures resembling spiral staircases.

The carriage is supported on helical springs and solid steel wheels.

To give the water a rotary motion he had inserted a helical piece of angle iron, and so prevented deposition.

It consisted of a metallic cylinder having a helical indenting groove cut upon it from end to end.

When the pilot valve opens, the pressure beneath the piston is relieved and it is seated by the helical spring above.

The translation of a body in helical motion is called its advance.