n.
Pronunciation: -stil- ' bes- ˌ tro ̇ l, - ˌ tr ō l
Function: noun
Etymology: International Scientific Vocabulary
Date: 1938
: a colorless crystalline synthetic compound C 18 H 20 O 2 used as a potent estrogen but contraindicated in pregnancy for its tendency to cause cancer or birth defects in offspring ― called also DES stilbestrol