flexion Meaning, Definition & Usage

  1. noun the state of being flexed (as of a joint)
    flection; flexure.
  2. noun deviation from a straight or normal course
    inflection; flection.
  3. noun act of bending a joint; especially a joint between the bones of a limb so that the angle between them is decreased
    flexure.

WordNet

Flex"ion noun
Etymology
L. flexio: cf. F. flexion.
Definitions
  1. The act of flexing or bending; a turning.
  2. A bending; a part bent; a fold. Bacon.
  3. (Gram.) Syntactical change of form of words, as by declension or conjugation; inflection.
    Express the syntactical relations by flexion. Sir W. Hamilton.
  4. (Physiol.) The bending of a limb or joint; that motion of a joint which gives the distal member a continually decreasing angle with the axis of the proximal part; -- distinguished from extension.

Webster 1913