gynecomastia

noun

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

: excessive development of the breast in the male

Examples of gynecomastia in a Sentence

Recent Examples on the Web

It shouldn’t be prescribed to men for acne, because at these high doses, can cause gynecomastia, or enlargement of breast tissue in men, Barbieri said. —Marina Kopf, NBC News, 9 Apr. 2024

That includes breast reductions for young men with gynecomastia, or overgrowth of breast tissue. —Claire Bugos, Verywell Health, 30 June 2023

This may include a breast augmentation, a mastectomy for gynecomastia, a hair transplant, a rhinoplasty, liposuction, facial fillers, or hormone therapy. —Mira Miller, Verywell Health, 2 June 2023

Clinical gynecomastia is a hormonal imbalance or elevated levels of estrogen and lowered levels of testosterone. —Lara Rosenbaum, Men's Health, 25 Jan. 2023

Word History

Etymology

gyneco- + Greek mastós "breast" + -ia entry 1, probably after French gynécomastie or German Gynaecomastie or Gynecomastie — more at mastoid entry 1

First Known Use

1881, in the meaning defined above

Medical Definition

gynecomastia

noun

gy·​ne·​co·​mas·​tia

variants or chiefly British gynaecomastia

ˈgī-nə-kō-ˈmas-tē-ə  ˈjin-ə- 

: excessive development of the breast in the male