[tuh-rat-uh-juhn, -jen, ter-uh-tuh-]
noun Biology.
a drug or other substance capable of interfering with the development of a fetus, causing birth defects.

1900–05; terato- + -gen

teratogenic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To teratogenic
World English Dictionary
teratogen (ˈtɛrətədʒən, tɪˈrætə-)
any substance, organism, or process that causes malformations in a fetus. Teratogens include certain drugs (such as thalidomide), infections (such as German measles), and ionizing radiation

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Medical Dictionary

teratogen te·rat·o·gen (tə-rāt'ə-jən, těr'ə-tə-)
An agent, such as a virus, a drug, or radiation, that causes malformation of an embryo or a fetus.

teratogenic ter·a·to·gen·ic (těr'ə-tə-jěn'ĭk)
Of, relating to, or causing malformations of an embryo or a fetus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
teratogen   (tə-rāt'ə-jən, těr'ə-tə-)  Pronunciation Key 
An agent, such as a virus, a drug, or radiation, that can cause malformations in an embryo or fetus.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
It is scientifically incorrect to call cells that could be teratogenic and produce self-limiting growths cancerous.
Related Words
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature