adj.1 a (often foll. by against, from, to) protected against an infection owing to the presence of specific antibodies, or through inoculation or inherited or acquired resistance. b relating to immunity (immune mechanism).
2 (foll. by from, to) free or exempt from or not subject to (some undesirable factor or circumstance).
Phrases and idioms:
immune response the reaction of the body to the introduction into it of an antigen.
Etymology: ME f. L immunis exempt from public service or charge (as IN-(1), munis ready for service): sense
1. f. F immun