• synonyms


  1. Pathology. abnormal adhesion of the bones of a joint.
  2. Anatomy. the union or consolidation of two or more bones or other hard tissues into one.
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Origin of ankylosis

1705–15; < Greek: a stiffening of the joints. See ankylo-, -osis
Related formsan·ky·lot·ic [ang-kuh-lot-ik] /ˌæŋ kəˈlɒt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for ankylosis

Historical Examples

  • Degeneration of the cartilage tissue: Ankylosis, Gout, Arthritis deformans.

    Valere Aude

    Louis Dechmann

  • When inflammation has caused the joint-ends of the bones to be fused together the ankylosis is termed osseous or complete.

  • Ultimately fibrous adhesions, resulting in ankylosis, may occur.

  • Creed: A metaphor with ankylosis—a figure of speech frozen stiff with fright.

  • A man with ankylosis of the ego, who is jealous of the stenographer for sufficient reasons.

British Dictionary definitions for ankylosis



  1. abnormal adhesion or immobility of the bones in a joint, as by a direct joining of the bones, a fibrous growth of tissues within the joint, or surgery
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Derived Formsankylotic or anchylotic (ˌæŋkɪˈlɒtɪk), adjective

Word Origin

C18: from New Latin, from Greek ankuloun to crook
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for ankylosis


stiffening of joints after injury or surgery, alternative (and more etymological) spelling of anchylosis (q.v.).

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Online Etymology Dictionary, © 2010 Douglas Harper

ankylosis in Medicine


  1. The stiffening or immobility of a joint resulting from disease, trauma, surgery, or bone fusion.
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Related formsan′ky•lotic (-lŏtĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.