sterilize
Americanverb (used with object)
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to destroy microorganisms in or on, usually by bringing to a high temperature with steam, dry heat, or boiling liquid.
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to destroy the ability of (a person or animal) to reproduce by removing the sexual organs or inhibiting their functions.
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to make (land) barren or unproductive.
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Informal. to delete or remove anything comprising or damaging from.
to sterilize a government document before releasing it to the press.
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Informal. to isolate or completely protect from unwanted, unauthorized, or unwholesome activities, attitudes, influences, etc..
You can't sterilize children against violence.
verb
Other Word Forms
Etymology
Origin of sterilize
Explanation
When you sterilize something, you make it completely clean and free from any contaminant. It's important to sterilize tools, hands, and furniture in hospitals so germs don't get spread between patients. People who make their own jam and pickles need to sterilize the jars first, and when you feed a tiny baby it's important to sterilize the bottles. Whenever you need to make sure something is as clean as possible, you should sterilize it. The earliest meaning of sterilize is still in use, too: to "make infertile," or to make it impossible for an organism to reproduce or have a baby.
Vocabulary lists containing sterilize
Everything, Everything
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Z for Zachariah
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This Week In Words: Current Events Vocab for January 16–22, 2021
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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.
We press that mash, sterilize it by heating, bottle it and ship it out.
From The Wall Street Journal • Apr. 15, 2026
Hospitals use it to sterilize medical devices, and some municipalities use low levels to treat public water supplies.
From Salon • Dec. 15, 2025
Scientists in the 1950s discovered a technique that uses radiation to sterilize male parasitic flies.
From Los Angeles Times • Sep. 17, 2025
The rule from which they are seeking relief applies to a chemical known as ethylene oxide, or EtO, which is commonly used to sterilize medical devices that can’t be cleaned using steam or radiation.
From Los Angeles Times • Aug. 16, 2025
I can boil and sterilize everything he eats and eats from—just as you do for a baby.
From "Z for Zachariah" by Robert C. O’Brien
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
