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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
This puts them at higher risk of having children born with birth defects of the brain and spinal cord, most commonly spina bifida and anencephaly.
—Ana B. Ibarra, The Mercury News, 15 Apr. 2024
All of the infants have distinctive physical birth defects, such as cleft palate and unusually small heads.
—Erika Edwards, NBC News, 5 Dec. 2023
Studies suggest that drinking water with elevated levels of nitrate over a sustained period can cause birth defects, thyroid problems and colon cancer.
—Laura Schulte, Journal Sentinel, 3 Apr. 2024
But these plastics also contain chemicals that can cause problems for both our bodies and the planet—exposure to these toxins has been linked to health problems including cancers, birth defects and endocrine system disruption.
—Will Sullivan, Smithsonian Magazine, 19 Mar. 2024
Take supplements: Folic acid helps protect against birth defects.
—Wendy Wisner, Health, 27 Mar. 2024
In 1962, Congress further expanded the FDA’s authority after the drug thalidomide was shown to cause severe birth defects — this time, to require that drugs be proven effective.
—Meg Tirrell, CNN, 26 Mar. 2024
Topiramate brings other risks, including birth defects, tingling sensations, and changes in mood.
—Daniel Engber, The Atlantic, 26 Mar. 2024
Studies on rats, rabbits and monkeys showed that these medications, if taken while pregnant, can lead to miscarriage and birth defects.
—Katie Camero, USA TODAY, 21 Mar. 2024
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'birth defect.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
First Known Use
circa 1864, in the meaning defined above
Dictionary Entries Near birth defect
Cite this Entry
“Birth defect.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/birth%20defect. Accessed 9 May. 2024.
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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