SINCE 1828

An Encyclopædia Britannica Company

unsterile

adjective un·ster·ile \ ˌən-ˈster-əl , chiefly British -ˌī(-ə)l \

Definition of unsterile

: not free from living organisms and microorganisms : not sterile

an unsterile instrument

an operation done in an unsterile environment

First Known Use of unsterile

circa 1934

in the meaning defined above

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