Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
compartmentalised is an adjective meaning "divided up into compartments or categories". It carries one recorded sense.
divided up into compartments or categories
“most sciences have become woefully compartmentalized”
Definitions, synonyms and semantic relations for compartmentalised come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.