inoculation
US /ɪˌnɑː.kjəˈleɪ.ʃən/
UK /ɪˌnɑː.kjəˈleɪ.ʃən/

1.
the action of inoculating or of being inoculated; vaccination.
:
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Mass inoculation campaigns have significantly reduced the incidence of the disease.
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The doctor recommended an inoculation against the flu.
2.
the introduction of microorganisms into a culture medium.
:
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The lab technician performed the inoculation of the bacterial sample onto the agar plate.
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Proper inoculation technique is crucial for accurate microbiological studies.