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sterile

American  
[ster-il, -ahyl] / ˈstɛr ɪl, -aɪl /

adjective

  1. free from living germs or microorganisms; aseptic.

    Successful operations rely on timely delivery of the sterile surgical instruments needed for each procedure.

  2. incapable of producing offspring; not producing offspring.

    Synonyms:
    unfruitful, infecund
    Antonyms:
    fertile
  3. barren; not producing vegetation.

    Attempts to cultivate the land have failed because of the sterile soil.

    Antonyms:
    fertile
  4. Botany.

    1. noting a plant in which reproductive structures fail to develop.

    2. bearing no stamens or pistils.

  5. not productive of results, ideas, etc.; fruitless.

  6. lacking vitality, vibrancy, interest, etc..

    Art can transform an otherwise sterile office into a happy, inspiring, and comforting space.


sterile British  
/ ˈstɛraɪl /

adjective

  1. unable to produce offspring; infertile

  2. free from living, esp pathogenic, microorganisms; aseptic

  3. (of plants or their parts) not producing or bearing seeds, fruit, spores, stamens, or pistils

  4. lacking inspiration or vitality; fruitless

  5. economics (of gold) not being used to support credit creation or an increased money supply

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

sterile Scientific  
/ stĕr′əl,stĕr′īl′ /
  1. Not able to produce offspring, seeds, or fruit; unable to reproduce.

  2. Free from disease-causing microorganisms.


Other Word Forms

Etymology

Origin of sterile

First recorded in 1545–55; from Latin sterilis “barren, unfruitful”

Explanation

A sterile person can't have kids, and a sterile environment is bland and boring. In both cases, sterile means lifeless. When you hear about a sterile person, it means they can't have kids: sterile women can't get pregnant, and sterile men can't be fathers. But the concept of sterility applies to things, too. An empty, white room with nothing in it is sterile. And a surgeon's instruments better be sterile — meaning they're free from germs and bacteria.

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Vocabulary lists containing sterile

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.

See Examples For:

Compounding pharmacies are pharmacies, you can’t get a drug without a prescription, certainly not a sterile injectable drug.

From Slate ● Oct. 6, 2026

During the 1950s, officials carried out one of the most successful biological control campaigns in history using a method known as the sterile insect technique.

From Science Daily ● Sep. 15, 2026

After being told she was sterile, Bonino got pregnant aged 27.

From Barron's ● Sep. 11, 2026

Depending on what is ordered, copycat retatrutide can arrive needing to be mixed with sterile, bacteriostatic water which requires various calculations.

From BBC ● Sep. 4, 2026

Obinze opened the door and stood aside for the others to go ahead, into the sterile hallway, where they paused to get their bearings, to be sure which way to go towards the register office.

From "Americanah" by Chimamanda Ngozi Adichie

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