|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|—n , pl helices, helixes|
|1.||a curve that lies on a cylinder or cone, at a constant angle to the line segments making up the surface; spiral|
|2.||a spiral shape or form|
|3.||the incurving fold that forms the margin of the external ear|
|4.||another name for volute|
|5.||any terrestrial gastropod mollusc of the genus Helix, which includes the garden snail (H. aspersa)|
|[C16: from Latin, from Greek: spiral; probably related to Greek helissein to twist]|
helix he·lix (hē'lĭks)
n. pl. he·lix·es or hel·i·ces (hěl'ĭ-sēz', hē'lĭ-)
A spiral form or structure.
The folded rim of skin and cartilage around most of the outer ear.
A three-dimensional curve that lies on a cylinder or cone, so that its angle to a plane perpendicular to the axis is constant.
|helix (hē'lĭks) Pronunciation Key
In geometry, a three-dimensional spiral shape, resembling a spring.