spiral of Archimedes
noun phrase
spiral of Ar·chi·me·des
| \ -ˌär-kə-ˈmē-dēz
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Definition of spiral of Archimedes
: a plane curve that is generated by a point moving away from or toward a fixed point at a constant rate while the radius vector from the fixed point rotates at a constant rate and that has the equation ρ = a θ in polar coordinates
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