prevention

noun

pre·​ven·​tion pri-ˈven(t)-shən How to pronounce prevention (audio)
Synonyms of preventionnext
: the act of preventing or hindering

Examples of prevention in a Sentence

Exercise and diet play a role in the prevention of heart disease. good crowd control is crucial to the prevention of riots
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.
The current phase expands participation to additional countries and concentrates on issues such as prevention of major equipment failures, safety classification of systems, and scenarios involving loss of external power supplies. Prabhat Ranjan Mishra, Interesting Engineering, 23 Jan. 2026 Florida has critical funding shortfalls in many areas — including mental-health services, homelessness prevention and programs targeted at families whose dire economic circumstances are dimming their children’s hope for a brighter future. Orlando Sentinel Editorial Board, The Orlando Sentinel, 23 Jan. 2026 Invasive species impact has more than doubled Invasive species were scored based on prevention and impact, which were good and poor, respectively. Caitlin Looby, jsonline.com, 23 Jan. 2026 Anchor your strategy in clear business outcomes like loss prevention or labor optimization. Chhandomay Mandal, Forbes.com, 23 Jan. 2026 See All Example Sentences for prevention

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of prevention was in the 15th century

Browse Nearby Words

Cite this Entry

“Prevention.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prevention. Accessed 28 Jan. 2026.

Kids Definition

prevention

noun
pre·​ven·​tion pri-ˈven-chən How to pronounce prevention (audio)
: the act or practice of preventing something
the prevention of fires

More from Merriam-Webster on prevention

Last Updated: - Updated example sentences
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