• synonyms


[jin-i-koh-mas-tee-uh, gahy-ni-, jahy-ni-]
  1. abnormal enlargement of the breast in a male.
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Also gyn·e·co·mas·ty [jin-i-kuh-mas-tee, gahy-ni-, jahy-ni-] /ˈdʒɪn ɪ kəˌmæs ti, ˈgaɪ nɪ-, ˈdʒaɪ nɪ-/.

Origin of gynecomastia

From New Latin, dating back to 1880–85; see origin at gyneco-, mast-, -ia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for gynecomastia

Historical Examples of gynecomastia

  • Gynecomastia or hypertrophy of the mammæ is still more frequent in male criminals.

    Criminal Man

    Gina Lombroso-Ferrero

Word Origin and History for gynecomastia


1881, from Greek gyne (see queen) + mazos "breast," variant of mastos (see masto-).

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Online Etymology Dictionary, © 2010 Douglas Harper

gynecomastia in Medicine


(gī′nĭ-kō-măstē-ə, jĭn′ĭ-)
  1. Abnormal enlargement of the male mammary glands, sometimes to the point of secreting milk.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.