Spiral-of-archimedes
noun, Geometry.
1.
a curve that is the locus of a point that moves outward with uniform speed along a vector, beginning at the origin, while the vector rotates about the origin with uniform angular velocity. Equation (in polar coordinates): r = aθ.
spiral of Archimedes
noun
1.
(maths) a spiral having the equation r = aθ, where a is a constant. It is the locus of a point moving to or from the origin at a constant speed along a line rotating around that origin at a constant speed
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spiral organ n. A specialized structure located on the inner surface of the basilar membrane of the cochlea containing hair cells that transmit sound vibrations to the nerve fibers. Also called organ of Corti.
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noun 1. a form of spring consisting of a wire coiled in a helix.
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noun 1. a staircase constructed around a central axis
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- Spiral vein of modiolus
spiral vein of modiolus n. A vein in the modiolus of the cochlea that is a tributary to the labyrinthine vein and the vein of the cochlear canal.