• synonyms


[ak-tin-oh-mahy-koh-sis, ak-tuh-noh-]
noun Veterinary Pathology, Pathology.
  1. an infectious, inflammatory disease caused by Actinomyces israelii in humans and A. bovis in domestic animals, and characterized by lumpy, often suppurating tumors, especially, about the jaws.
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Origin of actinomycosis

First recorded in 1880–85; actinomyc(es) + -osis
Also called lumpy jaw.
Related formsac·tin·o·my·cot·ic [ak-tin-oh-mahy-kot-ik, ak-tuh-noh-] /ækˌtɪn oʊ maɪˈkɒt ɪk, ˌæk tə noʊ-/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for actinomycosis

Historical Examples

  • Thus in England actinomycosis of the tongue is most prevalent.

    Special Report on Diseases of Cattle

    U.S. Department of Agriculture

  • Actinomycosis may in some cases be confounded with tuberculosis.

    Special Report on Diseases of Cattle

    U.S. Department of Agriculture

  • In 1906 we discovered the existence of actinomycosis among the black mountain sheep of northern British Columbia.

    Our Vanishing Wild Life

    William T. Hornaday

  • Bollinger determined that the Actinomyces bovis (Streptothrix bovis) is the cause of actinomycosis in cattle in 1877.

    The Fundamentals of Bacteriology

    Charles Bradfield Morrey

  • In actinomycosis the adjacent lymphatic glands are not involved.

British Dictionary definitions for actinomycosis


  1. a fungal disease of cattle and of cats and dogs, sometimes transmitted to humans esp by bites, characterized by a swelling of the affected part, most often the jaw or lungsNontechnical name: lumpy jaw
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Derived Formsactinomycotic (ˌæktɪnəʊmaɪˈkɒtɪk), adjective
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

actinomycosis in Medicine


  1. An inflammatory disease of cattle, hogs, and sometimes humans, caused by microorganisms of the genus Actinomyces and characterized by lumpy tumors of the mouth, neck, chest, and abdomen.
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Related formsac′ti•no•my•cotic (-kŏtĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.