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andiron
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androstenedione

an·dro·sten·e·di·one [ àndrō stn dīōn ]


noun 
Definition:
 
substance increasing testosterone: a dietary supplement that increases testosterone production, energy, strength, and muscle development. Unwanted side effects include disruption of hormonal balance, leading to aggressive behavior and mood swings, and hair loss.

[Mid-20th century. <androsterone + -ene + di-1 + -one]
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