Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
chemiluminescent is an adjective meaning "relating to the phenomenon of chemiluminescence". It carries one recorded sense.
relating to the phenomenon of chemiluminescence
“fireflies are chemiluminescent”
Definitions, synonyms and semantic relations for chemiluminescent come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.