teratogen
te·ra·to·gen
noun
1.
any agent that interferes with normal embryonic development: alcohol or thalidomide or X-rays or rubella are examples
Origin
From terato- + -gen.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.