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teratogen

[ tuh-rat-uh-juhn, -jen, ter-uh-tuh- ]

noun

, Biology.
  1. a drug or other substance capable of interfering with the development of a fetus, causing birth defects.


teratogen

/ ˈtɛrətədʒən; tɪˈrætə- /

noun

  1. 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” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


teratogen

/ tə-rătə-jən,tĕrə-tə- /

  1. An agent, such as a virus, a drug, or radiation, that can cause malformations in an embryo or fetus.


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Derived Forms

  • ˌteratoˈgenicist, noun
  • ˌteratoˈgenic, adjective
  • ˌteratogeˈnicity, noun
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Other Words From

  • te·rato·genic adjective
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Word History and Origins

Origin of teratogen1

First recorded in 1900–05; terato- + -gen
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Example Sentences

"It really is like a teratogen in pregnancy, a factor which interferes with normal fetal development, but it's still not taken seriously by a lot of medical professionals," Fejzo says.

Thalidomide, a well-known teratogen in humans, and retinoid derivatives -- used in treatments against leukaemia, psoriasis, and acne -- are known to cause severe heart defects in the fetus.

Potential teratogens are typically screened for using animals such as rodents and rabbits.

Initially, the courts concerned themselves with a narrow set of questions: Was Bendectin a teratogen?

From Salon

Alcohol was a teratogen, a substance that kills or damages developing cells, the researchers said, and then for the first time used term fetal alcohol syndrome to describe the result.

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terato-teratogenesis