noun / adjective / verb
spiral
SPY-rul/ˈspaɪrəl/
A course winding around a center while advancing.
The blue cord forms a flat spiral winding outward from its center.

Etymology
Spira supplies the image of a coil. An adjective describing something coiling around a fixed center became the noun for a curve that winds around a point while moving progressively farther from it.
In context
it grows faster on the outside of the curve and is forced into a spiral
More examples
- A spiral staircase winds around a central post.
- The eagle spirals upward on a warm air current.
- Repair costs spiral out of control as new problems appear.
Forms
spiral · spirals · spiraled · spiraling