'immunized' definitions:

Definition of 'immunized'

From: WordNet
adjective
Having been rendered unsusceptible to a disease [syn: immunized, immunised, vaccinated]

Definition of 'immunized'

From: GCIDE
  • immunized \immunized\ adj.
  • 1. 1 (Med.) rendered less susceptible (to disease) by treatment with a vaccine.
  • Syn: vaccinated. [WordNet 1.5]
  • 2. rendered insusceptible. [PJC]