te·​rato·​gen | \ tə-ˈra-tə-jən \

Definition of teratogen

: a teratogenic agent

Examples of teratogen in a Sentence

Recent Examples on the Web

According to Levin, these results show that the brain protects the developing body against drugs that otherwise might be dangerous teratogens (compounds that cause birth defects). Adam Rogers, WIRED, "Brainless Embryos Suggest Bioelectricity Guides Growth," 18 Mar. 2018 Some substances, known as teratogens, are perfectly fine for adults but are toxic for developing fetuses. Yvette D'entremont, SELF, "Don’t Buy Into Toxic 'Toxin-Free' Marketing," 13 Oct. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'teratogen.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of teratogen

1959, in the meaning defined above

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Time Traveler for teratogen

The first known use of teratogen was in 1959

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More Definitions for teratogen


te·​rato·​gen | \ tə-ˈrat-ə-jən \

Medical Definition of teratogen

: a teratogenic agent (as a drug or virus)

More from Merriam-Webster on teratogen

Nglish: Translation of teratogen for Spanish Speakers

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