1. the process of making a person or animal immune to infection, typically by vaccination
Usage: medical
2. the state of being protected against a particular disease
Usage: medical

Examples

• Children receive immunization against measles, mumps, and rubella.
• The immunization program has greatly reduced childhood diseases.
• She needed proof of immunization before starting college.
• Mass immunization campaigns helped eliminate polio in many countries.
• The doctor recommended immunization before traveling abroad.
• Immunization records must be kept up to date for school enrollment.