zinc oxide

noun

: an infusible white solid ZnO used especially as a pigment, in compounding rubber, and in pharmaceutical and cosmetic preparations (such as ointments and sunblocks)

Examples of zinc oxide in a Sentence

Recent Examples on the Web

It’s formulated with reef-safe zinc oxide and hyaluronic acid adds a boost of hydration. —Rebecca Shinners, Travel + Leisure, 21 June 2025

Calamine lotion: This topical treatment contains zinc oxide, which can soothe irritated or itchy skin.6 Medicated shampoo: Shampoos that contain medical-grade coal tar can help reduce eczema symptoms on your scalp. —Sarah Hudgens, Health, 19 June 2025

It’s powered by non-nano zinc oxide (that’s your UV blocker), plus prickly pear extract (to protect against blue-light pollution) and skin-soothing white sage extract. —Brigitt Earley, Glamour, 16 June 2025

Most rely on mineral filters like non-nano zinc oxide, though there are a few chemical formulas that pass the test too. —Iman Balagam, Vogue, 16 June 2025

Word History

First Known Use

1849, in the meaning defined above

Rhymes for zinc oxide

• actinide
• aldehyde
• alkoxide
• alongside
• amplified
• arsenide
• beautified
• biocide
• butoxide
• calcified
• ceramide
• certified

Kids Definition

zinc oxide

noun

: a white substance that is used as a white pigment, is added to rubber, and is used in medical and cosmetic preparations (as ointments and sunblocks)

Medical Definition

zinc oxide

noun

: a white solid ZnO used in pharmaceutical and cosmetic preparations (as ointments and powders)