1. makes immune or resistant to a particular infection or toxin by inoculation
Usage: medical
2. protects or makes resistant to something harmful

Examples

• The doctor immunizes children against measles with a vaccine.
• This shot immunizes you against hepatitis B.
• The school requires that all students be immunized before enrollment.
• Regular exercise immunizes the body against many diseases.
• Good preparation immunizes students against test anxiety.
• The new policy immunizes the company against future lawsuits.