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

Where other, more conventional pest control companies still employ general, broad-spectrum spraying as a blunt instrument, Axiom relies on precision, science, and innovation to target its efforts directly at the sources of pest infestations, while remaining conscious of the wider environment. —Malana Vantyler, USA Today, 6 Nov. 2025

The formula gets its sunray-shielding benefits from broad-spectrum chemical UV filters, which safeguard against damage while ensuring skin remains moisturized via aloe, hyaluronic acid, and squalane. —Kiana Murden, Vogue, 17 Oct. 2025

Aside from a heaping serving of broad-spectrum SPF 50, this formula delivers nourishing additives that bridge the gap between skin tint and moisturizer. —Lily Wohlner, Allure, 8 Oct. 2025

Heavy occlusives can trap debris and worsen breakouts; keep textures light, focus on humectants like glycerin or hyaluronic acid, and always, always add a broad-spectrum sunscreen. —Larry Stansbury, Essence, 7 Oct. 2025

Word History

First Known Use

1950, in the meaning defined at sense 1

Rhymes for broad-spectrum

• electrum
• spectrum

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