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.
About one out of every 200 babies is born with congenital CMV and, according to the CDC, about one out of five of those babies will have birth defects or other long-term health problems. Vic Tafur, The Athletic, 21 Feb. 2025 In some cases, babies with a birth defect may only survive a few months. Deidre McPhillips, CNN, 13 Feb. 2025 Both studies noted larger increases in deaths among infants born with birth defects. Almut Winterstein, The Conversation, 30 Jan. 2025 At Free People California Proposition 65 Warning: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. Free People, refinery29.com, 3 Jan. 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

Browse Nearby Words

Cite this Entry

“Birth defect.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/birth%20defect. Accessed 31 Mar. 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
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!