Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
immunodeficient is an adjective meaning "incapable of developing an immune response following exposure to an antigen". It carries one recorded sense.
incapable of developing an immune response following exposure to an antigen
“immunodeficient rodents”
Definitions, synonyms and semantic relations for immunodeficient come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.