immunized

From the verb immunize: (⇒ conjugate)

immunized is: ⓘ

v past (US & UK)

v past p (US & UK)

WordReference Random House Learner's Dictionary of American English © 2026

im•mu•nize /ˈɪmyəˌnaɪz, ɪˈmyunaɪz/   v. [~ + object] , -nized, -niz•ing. 

1. Immunology to make immune:
   The vaccine immunized her against measles.

im•mu•ni•za•tion /ˌɪmyənɪˈzeɪʃən, ɪˌmyu-/  n. 

[uncountable] Immunization just wasn't practical.

[countable] The doctors continued with the immunizations.

WordReference Random House Unabridged Dictionary of American English © 2026

im•mu•nize  (im′yə nīz′, i myo̅o̅′nīz), v.t., -nized, -niz•ing. 

1. Immunology to make immune.
2. to render harmless or ineffective;
   neutralize.
3. Lawmaking to grant (a witness) immunity.

Also,[esp. Brit.,] im′mu•nise′. 

• immune + -ize 1890–95

im′mu•niz′er, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

immunize, immunise / ˈɪmjʊˌnaɪz/ verb

1. to make immune, esp by inoculation

ˌimmuniˈzation, ˌimmuniˈsation noun

ˈimmuˌnizer, ˈimmuˌniser noun