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sterilize (v.)

"destroy the fertility of," 1690s (in reference to soil), from French stériliser or else from sterile + -ize; of living things from 1828. Meaning "render free of micro-organisms" is from 1878. Related: Sterilized; sterilizing.

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Definitions of sterilize from WordNet

sterilize (v.)
make free from bacteria;
Synonyms: sterilise
sterilize (v.)
make infertile;
in some countries, people with genetically transmissible disabilites are sterilized
Synonyms: sterilise / desex / unsex / desexualize / desexualise / fix
From wordnet.princeton.edu