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.
Opt for an oil-free, non-comedogenic, broad-spectrum SPF 30 or higher to shield your skin without weighing it down. Conçetta Ciarlo, Vogue, 11 Apr. 2025 So for extra protection, add your favorite sunscreen to your routine (the American Academy of Dermatology recommends using a water-resistant broad-spectrum SPF that’s at least SPF 30). Catharine Malzahn, Glamour, 9 Apr. 2025 Patients may also receive broad-spectrum antibiotic therapy, fever reducers and pain relievers. Melissa Rudy, FOXNews.com, 7 Apr. 2025 This presents a tremendous advantage over classical antennas, which require an unwieldy collection of static, often large, antennas to achieve broad-spectrum awareness. Paul Lipman, Forbes.com, 4 Apr. 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 22 Apr. 2025.

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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