verb, -tized, -tiz⋅ing.| 1. | to immerse in water or sprinkle or pour water on in the Christian rite of baptism: They baptized the new baby. |
| 2. | to cleanse spiritually; initiate or dedicate by purifying. |
| 3. | to give a name to at baptism; christen. |
| 4. | to administer baptism. |