Glossary Term:

Title

anti-estrogen

Phonetic

<b>an</b>-tee-<b>ES</b>-tro-jen or <b>an</b>-tie-<b>ES</b>-tro-jen

Description

a substance (for example, the drug tamoxifen) that blocks the effects of estrogen on tumors. Anti-estrogens are used to treat breast cancers that depend on estrogen for growth. See also estrogen, hormone therapy, selective estrogen receptor modulator.