Androgen

n. male sex hormone which promotes masculine characteristics

Androgen is the generic term for any natural or synthetic compound, usually a steroid hormone, that stimulates or controls the development and maintenance of masculine characteristics in vertebrates by binding to  androgen receptors. This includes the activity of the accessory male sex organs and development of male secondary sex characteristics. Androgens, which were first discovered in 1936, are also called androgenic hormones or testoids. Androgens are also the original anabolic steroids. They are also the precursor of all estrogens, the female sex hormones. The primary and most well-known androgen is testosterone.
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Androgen /an·dro·gen/ any substance, e.g., testosterone, that promotes masculinization. adrenal androgens the 19-carbon steroids synthesized by [more]Androgen - Community and Resources

Noun
1. male sex hormone that is produced in the testes and responsible for typical male sexual characteristics
(synonym) androgenic hormone
(hypernym) steroid hormone, steroid, sex hormone
(hyponym) androsterone

n. androgen, male sex hormone which promotes masculine characteristics