- a spiral.
- Geometry. the curve formed by a straight line drawn on a plane when that plane is wrapped around a cylindrical surface of any kind, especially a right circular cylinder, as the curve of a screw. Equation: x = a sinθ, y = a cosθ, z = b θ.
- a spiral ornament.
- (in a Corinthian capital) either of two scrolls issuing from a cauliculus.Compare Corinthian(def 2).
- Anatomy. the curved fold forming most of the rim of the external ear.
- Biochemistry. alpha helix.
Origin of helix
Examples from the Web for helix
Maazel writes about a soon-to-be Helix hostage, Anne-Janet, who was on “cancer furlough.”What a Real Cult Novel Looks Like
April 5, 2013
Sometimes the helix is prolonged so as to divide the concha in two.Criminal Man
The expanded metal covering was also wire tied to the helix.Concrete Construction
Halbert P. Gillette
For ornaments they have a stick in the helix, or simple ornament in the ear-lobe.Castes and Tribes of Southern India
Does the current in the wire at the top of the helix move east or west?Physics
Willis Eugene Tower
Helix (Theba) cartusiana (first noticed near a Carthusian monastery).Our British Snails
John William Horsley
- a curve that lies on a cylinder or cone, at a constant angle to the line segments making up the surface; spiral
- a spiral shape or form
- the incurving fold that forms the margin of the external ear
- another name for volute (def. 2)
- any terrestrial gastropod mollusc of the genus Helix, which includes the garden snail (H. aspersa)
Word Origin and History for helix
"a spiral thing," 1560s, from Latin helix "spiral," from Greek helix (genitive helikos), related to eilein "to turn, twist, roll," from PIE *wel-ik-, from root *wel- "to turn, revolve" (see volvox).
- 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.
- A three-dimensional spiral curve. In mathematical terms, a helix can be described as a curve turning about an axis on the surface of a cylinder or cone while rising at a constant upward angle from a base.
- Something, such as a strand of DNA, having a spiral shape.
In geometry, a three-dimensional spiral shape, resembling a spring.