Pronunciation: gi'ne-ko-mas'te-a, jin'e-; -mas'te
Definition: Excessive development of the male mammary glands, due mainly to ductal proliferation with periductal edema; frequently secondary to increased estrogen levels, but mild gynecomastia may occur in normal adolescence.
[gyneco- + G. mastos, breast]
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Examples: glitazone, GI cocktail, etc.