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Meaning of teratogen

te•rat•o•gen

Pronunciation: (tu-rat'u-jun, -jen", ter'u-tu-), [key]
— n. Biol.
  1. a drug or other substance capable of interfering with the development of a fetus, causing birth defects.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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