[ ang-kuh-loh-sis ]
/ ˌæŋ kəˈloʊ sɪs /


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

Origin of ankylosis

1705–15; < Greek: a stiffening of the joints. See ankylo-, -osis

Related forms

an·ky·lot·ic [ang-kuh-lot-ik] /ˌæŋ kəˈlɒt ɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ankylosis

British Dictionary definitions for ankylosis



/ (ˌæŋkɪˈləʊsɪs) /


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

Derived Forms

ankylotic or anchylotic (ˌæŋkɪˈlɒtɪk), adjective

Word Origin for ankylosis

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

Medicine definitions for ankylosis


[ ăng′kə-lōsĭs ]


The stiffening or immobility of a joint resulting from disease, trauma, surgery, or bone fusion.

Related forms

an′ky•lotic (-lŏtĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.