inoculum inoculator • inocystoma · · · Info · Definitions · Synonyms · Characters · · inoculum · · Text Latin · · Script 8 · · Length Definitions · · · (noun) a substance (a virus or toxin or immune serum) that is introduced into the body to produce or increase immunity to a particular disease. Synonyms: inoculant. · · Noun Definition 1 Synonyms · · · inoculant · · Synonym 1 Characters · · c latin small letter c U+0063 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F u latin small letter u U+0075