Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
nebulose is an adjective meaning "lacking definite form or limits". It carries one recorded sense.
lacking definite form or limits
“gropes among cloudy issues toward a feeble conclusion”
“nebulous distinction between pride and conceit”
Definitions, synonyms and semantic relations for nebulose come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.