different between flexure vs recurvation

English

From Latin flexura.

flexure (countable and uncountable, plural flexures)

The act of bending or flexing; flexion.
A turn; a bend; a fold; a curve.
- British Quarterly Review
  varying with the flexures of the valley through which it meandered
(anatomy) A curve or bend in a tubular organ.
(zoology) The last joint, or bend, of the wing of a bird.
(astronomy) The small distortion of an astronomical instrument caused by the weight of its parts; the amount to be added or subtracted from the observed readings of the instrument to correct them for this distortion.

The American Heritage Dictionary of the English Language, Fourth Edition (2000).

flex?re

recurvation (countable and uncountable, plural recurvations)

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