Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
institutionalised is an adjective meaning "officially placed in or committed to a specialized institution". It carries 2 recorded senses.
officially placed in or committed to a specialized institution
“had hopes of rehabilitating the institutionalized juvenile delinquents”
given the character of an institution or incorporated into a structured and usually well-established system
“institutionalized graft”
“institutionalized suicide as practiced in Japan”
Definitions, synonyms and semantic relations for institutionalised come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.