[{"Bold_text": "noun", "List Items": ["the part of the invisible spectrum invisible spectrumthat is contiguous to the red end of the visible spectrum visible spectrumand that comprises electromagnetic radiation electromagnetic radiationof wavelengths from 800 nanometers to 1 millimeter."]}, {"Bold_text": "adjective", "List Items": ["noting or pertaining to the infrared or its component rays:infrared radiation."]}]