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