from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various hormones, such as estrogen and androgen, affecting the growth or function of the reproductive organs, the development of secondary sex characteristics, and the behavioral patterns of animals.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Testosterone in men and estrogen in women and their related hormones involved in puberty, arousal, sex drive
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any hormone affecting the development and growth of sex organs
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