birth defect

noun

: a physical or biochemical defect that is present at birth and may be inherited or environmentally induced

Examples of birth defect in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Such pollutants move through the air but also accumulate in soil, dust, and people's bodies; several are known to cause cancer, neurological issues, and birth defects even at very low exposure levels. Alejandra Borunda, NPR, 22 May 2025 More recently, a few small studies in humans have found links between atrazine exposure in people living on or near U.S. farms and adverse birth outcomes, such as low birth weights, preterm deliveries and birth defects — all of which can be predictors of health issues later in life. Knvul Sheikh, New York Times, 22 May 2025 Long term effects can include memory loss, psychosis, depression, numbness, or birth defects if the drug is used during pregnancy. Jillian Frankel, People.com, 22 May 2025 Phthalates, often used in personal care products, children’s toys and food packaging and processing materials, are known to disrupt hormone function and have been linked to birth defects, infertility, learning disabilities and neurological disorders. Sharon Udasin, The Hill, 29 Apr. 2025 See All Example Sentences for birth defect

Word History

First Known Use

circa 1864, in the meaning defined above

Time Traveler
The first known use of birth defect was circa 1864

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Cite this Entry

“Birth defect.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/birth%20defect. Accessed 3 Jun. 2025.

Kids Definition

birth defect

noun
: a serious defect (as in physical or mental function) that is present at birth and is inherited or caused by something that happens or exists in the environment

Medical Definition

birth defect

noun
: a physical or biochemical defect (as cleft palate, phenylketonuria, or Down syndrome) that is present at birth and may be inherited or environmentally induced
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