Inoculant

noun

Definitions

Noun
  1. 1
    The active material used in an inoculation; an inoculum
  2. 2
    a substance (a virus or toxin or immune serum) that is introduced into the body to produce or increase immunity to a particular disease wordnet
  3. 3
    An alloyant used to refine grains in a cast microstructure.

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