broad-spectrum

adjective

broad-spec·​trum ˈbrȯd-ˈspek-trəm How to pronounce broad-spectrum (audio)
1
: effective against a wide range of organisms (such as insects or bacteria)
a broad-spectrum antibiotic
2
: effective in protecting skin from ultraviolet radiation by absorbing or blocking both UVA and UVB rays
broad-spectrum sunscreens

Examples of broad-spectrum 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.
Gurland, who favors Aplos, which makes spirits infused with citrus, herbal botanicals, and broad-spectrum hemp. Andrea Strong, Bon Appetit Magazine, 30 Dec. 2025 Fluoroquinolones Fluoroquinolones are broad-spectrum antibiotics used to treat various bacterial infections. T'keyah Bazin, Verywell Health, 29 Dec. 2025 Mosnodenvir, originally developed by the Janssen Pharmaceutical Companies of Johnson & Johnson, was designed as a broad-spectrum dengue antiviral capable of acting against all four viral serotypes. New Atlas, 29 Dec. 2025 Merck will donate a six-month supply of a powerful broad-spectrum antibiotic to treat pneumonia, skin and stomach infections. Ken Alltucker, USA Today, 19 Dec. 2025 See All Example Sentences for broad-spectrum

Word History

First Known Use

1950, in the meaning defined at sense 1

Time Traveler
The first known use of broad-spectrum was in 1950

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Cite this Entry

“Broad-spectrum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/broad-spectrum. Accessed 6 Jan. 2026.

Medical Definition

broad-spectrum

adjective
1
: effective against a wide range of organisms (as insects or bacteria)
broad-spectrum antibiotics
compare narrow-spectrum
2
: effective in protecting skin from ultraviolet radiation by absorbing or blocking both UVA and UVB rays
broad-spectrum suncreen
Last Updated: - Updated example sentences
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