gynecomastia

noun
gy·​neco·​mas·​tia | \ˌgī-nə-kō-ˈma-stē-ə \

Definition of gynecomastia 

: excessive development of the breast in the male

Examples of gynecomastia in a Sentence

Recent Examples on the Web

Is gynecomastia more common among men in some age groups than others? Emma Sarran Webster, Allure, "Why More Men Are Getting Breast Reduction Surgery for Gynecomastia," 31 Jan. 2018 Many patients with gynecomastia speak about being ridiculed because of their condition. Emma Sarran Webster, Allure, "Why More Men Are Getting Breast Reduction Surgery for Gynecomastia," 31 Jan. 2018 In that study, three young boys had cases of prepubertal gynecomastia (abnormal breast growth). Lauren Castle, azcentral, "Lavender, tea tree oils linked to abnormal breast growth in young boys," 22 Mar. 2018 When the topical application of the oils stopped, the boys' gynecomastia went away. Lauren Castle, azcentral, "Lavender, tea tree oils linked to abnormal breast growth in young boys," 22 Mar. 2018 Some research in the past has linked essential oils to hormone disturbances, with some suggesting a link between the oils and abnormal breast growth in young boys, called prepubertal gynecomastia. Alexandra Sifferlin, Time, "Are Essential Oils Safe?," 19 Mar. 2018 There are still a lot of unknowns about the causes of gynecomastia, but scientists mostly cite hormonal imbalances. Eric Pianin, Washington Post, "Why some men are asking for breast-reduction surgery," 6 Mar. 2018 And here's bad news for marijuana users: The most common reason for gynecomastia among 18-to-35-year-olds is frequent use of pot, according to Ruff. Eric Pianin, Washington Post, "Why some men are asking for breast-reduction surgery," 6 Mar. 2018 As the Washington Post reported, the root cause of gynecomastia is a hormonal imbalance between estrogen and testosterone. Emma Sarran Webster, Allure, "Why More Men Are Getting Breast Reduction Surgery for Gynecomastia," 31 Jan. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'gynecomastia.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of gynecomastia

1881, in the meaning defined above

History and Etymology for gynecomastia

New Latin, from gynec- + Greek mastos breast + New Latin -ia

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Last Updated

14 Nov 2018

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Time Traveler for gynecomastia

The first known use of gynecomastia was in 1881

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More Definitions for gynecomastia

gynecomastia

noun
gy·​ne·​co·​mas·​tia
variants: or chiefly British gynaecomastia \ˈgī-​nə-​kō-​ˈmas-​tē-​ə, ˈjin-​ə-​ \

Medical Definition of gynecomastia 

: excessive development of the breast in the male

More from Merriam-Webster on gynecomastia

Britannica.com: Encyclopedia article about gynecomastia

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