from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Abnormal enlargement of the breasts in a male.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Excessive development of breasts in males, resembling the breast development in women.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. excessive development of the breasts in males; usually the result of hormonal imbalance or treatment with certain drugs (including some antihypertensives)


from Wiktionary, Creative Commons Attribution/Share-Alike License

From gynaeco-, from Ancient Greek γῠναικός (gunaikos), a genitive of γυνή (gune, "woman") + μαστός (mastos, "breast").


  • For example, nearly 75% of the 18,000 men who underwent a procedure known as gynecomastia—male breast reduction—were between the ages of 13 and 19.

    Gym, Check. Diet, Check. Face, Lift

  • Enlarged breasts in men, known as gynecomastia, generally indicates an imbalance of estrogen and testosterone, which can occur from puberty or aging -- or it could be a sign of kidney disease, or a pituitary tumor.

    What Your Body Is Telling You

  • That is technically called gynecomastia, that men develop the breasts get enlarged.

    CNN Transcript Feb 5, 2005

  • Holler had a condition called gynecomastia, which causes male breast tissue to swell and take on a female shape.

    ABC News: Top Stories

  • The condition, known as gynecomastia, can affect men at any age and is usually caused by overeating or hormonal imbalances.

    Home | Mail Online

  • This suggested certain inherited syndromes, including gynecomastia, which is the excessive development of breasts in men, usually the result of a hormonal imbalance.

    NYT > Home Page

  • Liposuction may sometimes be used to treat a condition called gynecomastia, or male breast enlargement, which frequently occurs among both teenage and adult males. - Business News

  • It's a condition called gynecomastia, and it's typically a source of intense embarrassment for men.

    CTV News RSS Feed

  • This procedure is typically performed to treat a condition known as gynecomastia (enlarged breast tissue in men) or breasts enlarged as a result of fatty deposits from obesity.

    PRWeb - Daily News Feed

  • For the second year, male breast reduction surgery - known as gynecomastia - is the fastest growing plastic surgery in England, the



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