broad-spectrum

adjective

broad-spec·​trum ˈbrȯd-ˈspek-trəm 

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

Look for broad-spectrum sunscreen with an SPF of 30 or higher; it should be worn daily and reapplied every couple of hours. —Andrea Chang, Los Angeles Times, 21 Dec. 2024

Therefore, applying a broad-spectrum sunscreen with an SPF 30 or higher is a simple way to protect your skin. —Sara Button, AFAR Media, 19 Dec. 2024

This cream also provides broad-spectrum SPF 23 protection against UVA and UVB rays. —Kirsten Chanel Webber, Rolling Stone, 17 Dec. 2024

Aminoglycosides are broad-spectrum antibiotics commonly used in hospital settings. —Ayesha Gulzar, Verywell Health, 13 Dec. 2024

Word History

First Known Use

1950, in the meaning defined at sense 1

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