Inoculum definitions

ĭ-nŏk'yə-ləm
The definition of an inoculum is a substance introduced into the body to create or increase the body's resistance or immunity to a disease.

A flu vaccine is an example of an inoculum.

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Material used in an inoculation, as bacteria; inoculant.
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The material used in an inoculation.
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The active material used in an inoculation; an inoculant.
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The material used in an inoculation.
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Origin of inoculum

New Latin from Latin inoculāre to graft a scion inoculate