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sanitizer

American  
[san-i-tahy-zer] / ˈsæn ɪˌtaɪ zər /

noun

  1. a substance or preparation for killing germs, designed for use especially on food-processing equipment.


Usage

What does sanitizer mean? Sanitizer is a substance or fluid designed to kill germs on skin and objects. To sanitize means to clean something by removing the dirt or destroying the germs on it. Food service operations use sanitizer to clean their equipment so that food doesn’t become contaminated with bacteria or other stuff that shouldn’t be in it. Sanitizer also refers to household products (especially hand sanitizer) that are used to prevent the spread of disease by killing germs on surfaces and skin. Example: We use industrial-grade sanitizer in the restaurant kitchen to keep our equipment free of germs.

Etymology

Origin of sanitizer

First recorded in 1945–50; sanitize + -er 1

Explanation

Sanitizer is a product that's used to make something extremely clean. Using hand sanitizer is one good way to help keep germs from spreading. Sanitizer doesn't just clean, it sanitizes, or kills viruses and bacteria. Both words come from sanitary and its Latin root, sanitas, which means "health." If you're cleaning a kitchen or bathroom, you might want to use a sanitizer spray on germy surfaces, and when you can't wash your hands with soap and water, hand sanitizer is the way to go!

Keep Reading on Vocabulary.com

Vocabulary lists containing sanitizer

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Hand sanitizer, folders, perfume, a pair of black leggings.

From The Wall Street Journal • Mar. 5, 2026

The warehouse and surrounding storage areas were filled with stacks of pallets and cardboard boxes containing highly flammable ethanol-based hand sanitizer, according to court documents.

From Los Angeles Times • Feb. 7, 2026

More than 80% of sales come from business-to-business distributors, which is helped by some 20 million soap and sanitizer dispensers that help drive recurring sales.

From The Wall Street Journal • Jan. 22, 2026

Hand sanitizer does not work well against norovirus — meaning that proper handwashing is vital, experts say.

From Los Angeles Times • Dec. 13, 2025

I squeezed some hand sanitizer onto the cut, felt a deep, stinging burn, unwrapped a new Band-Aid, and wrapped it around my finger.

From "Turtles All the Way Down" by John Green

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