Added 9 October 2026 bioluminescent adjective Categories: Describing WordsRare Words adjective ! Definition from Wiktionary (CC BY-SA). More about bioluminescent at Wordnik → Where our words come from → Exhibiting bioluminescence. Related Words: lightbioluminiscentbioluminometicbiochromaticbioticphototrophicbiologicbioactivebiophilousbionticbioelectronicphotobiontic Back to today's word