Abnormal enlargement of the breasts in a male.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "gynecomastia" in a sentence
"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."
"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."
"That is technically called gynecomastia, that men develop the breasts get enlarged."