Syllable division and stress derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
noctilucent is an adjective meaning "shining or glowing by night". It carries one recorded sense.
Definitions, synonyms and semantic relations for noctilucent come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.