from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of, relating to, or causing malformations of an embryo or fetus.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Of, relating to, malformations or defects to an embryo or foetus.
  • adj. Causing malformations or defects to an embryo or foetus.
  • n. A teratogenic agent.

from The Century Dictionary and Cyclopedia

  • Producing monsters; of or pertaining to teratogeny.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of or relating to substances or agents that can interfere with normal embryonic development


terato- + -genic (Wiktionary)



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  • "causing the formation of monsters," 1879, from teratogeny (1857), from comb. form of Greek teras (genitive teratos) "marvel, monster" + -genic, producing, forming
    – online etymology dictionary

    February 20, 2013