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Pronunciation: ri-jid'i-te


  1. Stiffness or inflexibility.
  2. In psychiatry and clinical psychology, an aspect of personality characterized by a person's resistance to change.
  3. In neurology, one type of increase in muscle tone at rest; characterized by increased resistance to passive stretch, independent of velocity and symmetric about joints; increases with activation of corresponding muscles in the contralateral limb. Two basic types are cogwheel rigidity and lead-pipe rigidity.

Synonym(s): rigor1

[L. rigidus, rigid, inflexible]

See Also: nuchal rigidity

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.