Testosterone

//tɛˈstɒ.stə.ɹəʊn// noun

noun ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    A steroid hormone that stimulates development of male secondary sexual characteristics, produced mainly in the testes, but also in the ovaries and adrenal cortex. countable, uncountable

    "Mammalian testes contain almost no testosterone because it is sent out into the body as quickly as it is made."

  2. 2
    a potent androgenic hormone produced chiefly by the testes; responsible for the development of male secondary sex characteristics wordnet
  3. 3
    Manly behavior, often of an aggressive or foolishly reckless nature. countable, figuratively, uncountable

    "Mother encouraged James to rely more on intelligence and less on testosterone to deal with the neighbor's son."

Example

More examples

"Some of the adverse effects of testosterone treatment may be popping up now."

Etymology

From test(is) + -o- + -sterone (“steroid hormone”).

Related phrases

testosterone undecanoate

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.