verb
(transitive, immunology) To introduce an antigenic substance or vaccine into something (e.g. the body) or someone, such as to produce immunity to a specific disease.
(transitive, by extension) To safeguard or protect something as if by inoculation.
(transitive) To add one substance to another.
(transitive) To graft by inserting buds.
(figurative, transitive) To introduce into the mind (used especially of harmful ideas or principles).
noun
Synonym of inoculum.