a hormone made mainly in the testes (part of the male reproductive system). it is needed to develop and maintain male sex characteristics, such as facial hair, deep voice, and muscle growth. testosterone may also be made in the laboratory and is used to treat certain medical conditions.
出典:Wiktionary
From test(is) + -o- + -sterone (“steroid hormone”).
testosterone (countable かつ uncountable, 複数形 testosterones)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/28 00:39 UTC 版)
Testosterone is a steroid hormone from the androgen group and is found in mammals, reptiles, birds, and other vertebrates. In mammals, testosterone is primarily secreted in the testes of males and the ovaries of females, although small amounts are also secreted by the adrenal glands. It is the principal male sex hormone and an anabolic steroid.
an androgenic hormone called testosterone
testosterone is responsible for the male sex drive
an androgenic hormone that is less active than testosterone
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