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.
With the weakened magnetic field, more harmful radiation would have reached Earth’s surface, elevating risk of sunburn, eye damage, birth defects, and other health issues. Raven Garvey, Space.com, 24 July 2025 This repeal means more climate disasters, more heart attacks, more asthma attacks, more birth defects, more premature deaths. Matthew Glasser, ABC News, 12 June 2025 During the program’s first 15 years, its officers were involved in a wide swath of epidemiological investigations in areas including lead paint exposure, a cancer cluster’s connection to birth defects, family planning practices and famine relief. Casey Luc, The Conversation, 14 Apr. 2025 Infant mortality is still at nearly nine percent in Mississippi, for instance, believed to be linked to a variety of factors such as birth defects and maternal health complications. Alexandra Bregman, Forbes.com, 4 July 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 9 Aug. 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
Last Updated: - Updated example sentences
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