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

Beyond providing a broad-spectrum SPF of 30 or higher, these formulas are chock-full of nourishing ingredients (Niacinamide! —Jennifer Hussein, Allure, 18 Aug. 2024

The lightweight, full-coverage cream offers SPF 36 for broad-spectrum protection in a reef-friendly, fragrance-free formula while promoting a smooth, even complexion. —Danielle Sinay, Glamour, 13 Aug. 2024

This hybrid sunscreen offers impressive broad-spectrum sun protection (critical for everyone but especially for those who use retinoids in the evening) and nourishes skin with a blend of vitamin E, niacinamide, and hyaluronic acid. —Deanna Pai, Allure, 13 Aug. 2024

Not to mention, deciphering between SPF ratings and broad-spectrum labels is also no small feat. —Tira Urquhart, Essence, 13 Aug. 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