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