Meaning of “sterile” in the English Dictionary

"sterile" in British English

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sterileadjective

uk /ˈster.aɪl/ us /ˈster.əl/

sterile adjective (UNABLE TO PRODUCE)

(of a living being) unable to produce young, or (of land) unable to produce plants or crops:

Mules are usually sterile.
One of the side effects of the drug could be to make men sterile.

having no imagination, new ideas, or energy:

a sterile argument

sterile adjective (CLEAN)

completely clean and free from dirt and bacteria:

The operation must be carried out under sterile conditions.

(Definition of “sterile” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"sterile" in American English

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sterileadjective [ not gradable ]

us /ˈster·əl/

sterile adjective [ not gradable ] (UNABLE TO PRODUCE)

(of a person or animal) unable to produce young, or of land unable to produce plants or crops:

It was a small oasis surrounded by sterile desert.

sterile adjective [ not gradable ] (WITHOUT BACTERIA)

free from bacteria:

Medical equipment must be kept sterile.

sterile adjective [ not gradable ] (LACKING)

lacking in imagination, ideas, or enthusiasm:

Suburban housing developments are often sterile environments.

(Definition of “sterile” from the Cambridge Academic Content Dictionary © Cambridge University Press)