helicoid

adjective

1. coiled or curving like a spiral.

noun

2. Geometry. a warped surface generated by a straight line moving so as to cut or touch a fixed helix.

adjective also: helicoidal

1. biology shaped like a spirala helicoid shell

noun

2. geometry any surface resembling that of a screw thread

adj.

1. Arranged in or having the general shape of a flattened coil or spiral.

Adjective

1. Arranged in or having the approximate shape of a flattened coil or spiral curve.

Noun

1. A surface in the form of a coil or screw. A helicoid is generated mathematically by rotating a plane or twisted curve about an axis at a fixed rate and simultaneously translating it in the direction of the line of axis, also at a fixed rate.