Spiral line



spiral line n.
See intertrochanteric line.

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  • Spiralling

    noun 1. Geometry. a plane curve generated by a point moving around a fixed point while constantly receding from or approaching it. 2. a helix. 3. a single circle or ring of a spiral or helical curve or object. 4. a spiral or helical object, formation, or form. 5. Aeronautics. a maneuver in which an […]

  • Spiral model

    programming A software life-cycle model which supposes incremental development, using the waterfall model for each step, with the aim of managing risk. In the spiral model, developers define and implement features in order of decreasing priority. [Barry Boehm, “A Spiral Model of Software Development and Enhancement”, ACM SIGSOFT Software Engineering Notes, August 1986]. [Barry Boehm […]



  • Spiral-nebula

    noun, Astronomy. 1. (formerly) a spiral galaxy.

  • 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 […]



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