antiestrogen

noun

an·​ti·​es·​tro·​gen ˌan-tē-ˈe-strə-jən How to pronounce antiestrogen (audio)
ˌan-tī-,
 British  -ˈē-
variants or British antioestrogen
: a substance (such as tamoxifen) that inhibits the physiological action of an estrogen
… acts like an antiestrogen in breast and uterine tissue, thus protecting against hormone-stimulated cancers …Jane E. Brody
antiestrogenic adjective
or British antioestrogenic
ˌan-tē-ˌe-strə-ˈje-nik How to pronounce antiestrogen (audio)
ˌan-tī-,
 British  -ˌē-
antiestrogenic agents
an antiestrogenic effect

Word History

First Known Use

1965, in the meaning defined above

Time Traveler
The first known use of antiestrogen was in 1965

Dictionary Entries Near antiestrogen

Cite this Entry

“Antiestrogen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antiestrogen. Accessed 24 Jun. 2024.

Medical Definition

antiestrogen

noun
an·​ti·​es·​tro·​gen
variants or chiefly British antioestrogen
: a substance (as tamoxifen) that inhibits the physiological action of an estrogen
antiestrogenic adjective
or chiefly British antioestrogenic
antiestrogenic agents
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