[{"Bold_text": "adjective", "List Items": ["beyond the violet the spectrum, corresponding to light having wavelengths shorter than 4000 angstrom units.", "pertaining to, producing, or utilizing light having such wavelengths:an ultraviolet lamp."]}, {"Bold_text": "noun", "List Items": ["ultraviolet radiation."]}, {"Bold_text": "Adjective", "List Items": null}, {"Bold_text": "Noun", "List Items": null}]