from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A naturally occurring compound of plants, such as soybeans, or plant products, such as whole grain cereals, that acts like estrogen in the body.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of a range of various compounds found in plants that function similarly to estrogens.
phyto- + estrogen (Wiktionary)