relating to or using a type of light that can be felt as heat but cannot be seen. It has wavelengths that are longer than those of light that can be seen, but shorter than those of radio waves.
Synonyms and related words
Words used to describe types of light
backlit
candlelit
direct
infrared
adjectivephysics
US /ˌɪnfrəˈred/
DEFINITIONS1
1
relating to or using a type of light that can be felt as heat but cannot be seen. It has wavelengths that are longer than those of light that can be seen, but shorter than those of radio waves.