Wiktionary
one-start
a. 1 (context mathematics in two dimensions English) Describing a simple spiral that starts at a point at the origin and does not divide the plane 2 (context mathematics in three dimensions English) Describing a section of a simple helix alt. 1 (context mathematics in two dimensions English) Describing a simple spiral that starts at a point at the origin and does not divide the plane 2 (context mathematics in three dimensions English) Describing a section of a simple helix