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 (tə-răt′ə-jən, tĕr′ə-tə-)
An agent, such as a virus, a drug, or radiation, that causes malformation of an embryo or fetus.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈtɛrətədʒən; tɪˈrætə-)
(Medicine) 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
ˌteratoˈgenic adj
ˌteratoˈgenicist n
ˌteratogeˈnicity n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(təˈræt ə dʒən, -ˌdʒɛn)

a drug or other substance capable of interfering with the development of a fetus, causing birth defects.
te•rat`o•gen′ic, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.teratogen - any agent that interferes with normal embryonic development: alcohol or thalidomide or X-rays or rubella are examples
thalidomide - a sedative and hypnotic drug; withdrawn from sale after discovered to cause severe birth defects because it inhibits angiogenesis
agent - an active and efficient cause; capable of producing a certain effect; "their research uncovered new disease agents"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


n. teratógeno, agente que causa teratogénesis.
English-Spanish Medical Dictionary © Farlex 2012
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References in periodicals archive ?
A teratogen is any substance, agent or process that affects typical fetal development, resulting in one or more congenital disorders in the fetus.
Despite this complexity, hyperglycemia has been determined to be the primary teratogen in all forms of diabetes.
Valproate should not be used during pregnancy because it is a known teratogen and can cause other fetal problems throughout gestation.
Methimazole is a known teratogen associated with this condition hence should be avoided in pregnancy.
Hecht reminds us that spironolactone is a teratogen and using effective contraception can help reduce the risk of exposing a pregnancy to the medication.
Citation: Jiangwa Xing et al., "A method for human teratogen detection by geometrically confined cell differentiation and migration," Scientific Reports, 2015; 5: 10038 DOI: 10.1038/srep10038
The toll-free hotline (1-866-626-6847) connects women and health care providers to teratogen information specialists, while the website includes fact sheets on medications and other exposures.
also take issue with benzene exposure as a plausible explanation for our findings because they assert that benzene is not a proven teratogen. Lack of direct evidence of causation between benzene and birth defects does not exclude the plausibility of benzene as a teratogen.
KARACHI -- Congenital disabilities that affect a significant number of people are often caused due to teratogen, medication high in toxic value and contaminated water that lead to growth of abnormal cell tissue in unborn during fetal growth, said researchers in a session organised by Dow University of Health Sciences (DUHS).
A checklist was compiled to collect the following data: patient particulars, parental dates of birth, details of the pregnancy (including birth order, teratogen exposure, mode of delivery and outcomes of the pregnancy) where available, a detailed pedigree analysis, history, type of lesion and associated malformations in the affected child, and the occurrence of other abnormalities and pregnancy outcomes in parents of a child with an NTD.