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bioluminescence

/ˌbaɪ̯oʊ̯ˌluməˈnɛsəns/ noun

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about bioluminescence at Wordnik → Where our words come from →

  1. Luminescence produced by physiological processes (as in the firefly).