Last Updated：2025/11/22

(American spelling, medicine) Excessive development of breasts in males, resembling the breast development in women.

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gynecomastia

Source Word

gynecomastia

IPA(Pronunciation)

US countable uncountable

(American spelling, medicine) Excessive development of breasts in males, resembling the breast development in women.

Japanese Meaning

男性における乳房の過剰な発達、女性の乳房発達に類似した状態

The doctor explained that gynecomastia is often caused by hormonal imbalances and can sometimes resolve without surgery.

医師は、女性化乳房はホルモンの不均衡によって起こることが多く、場合によっては手術なしで自然に改善することがあると説明した。

Sense（1）

(American spelling, medicine) Excessive development of breasts in males, resembling the breast development in women.

But probably the primary reason for gynecomastia in adult onset is drugs—and these are not illegal drugs.

gynecomastias

（ plural ）