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The Collaborative International Dictionary
The flexure of a curve

Flexure \Flex"ure\ (?; 135), n. [L. flexura.]

  1. The act of flexing or bending; a turning or curving; flexion; hence, obsequious bowing or bending.

    Will it give place to flexure and low bending?
    --Shak.

  2. A turn; a bend; a fold; a curve.

    Varying with the flexures of the valley through which it meandered.
    --British Quart. Rev.

  3. (Zo["o]l.) The last joint, or bend, of the wing of a bird.

  4. (Astron.) The small distortion of an astronomical instrument caused by the weight of its parts; the amount to be added or substracted from the observed readings of the instrument to correct them for this distortion.

    The flexure of a curve (Math.), the bending of a curve towards or from a straight line.