infrared light infrared lamp • infrared radiation · · · Info · Definitions · Synonyms · Characters · · infrared light · · Text Common · · Latin · · Scripts 14 · · Length 3 · · Syllables Definitions · · · (noun) electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves. Synonyms: infrared, infrared light, infrared radiation, infrared emission. · · Noun Definition 1 Synonyms · · · infrared · · Synonym 1 infrared radiation · · Synonym 2 infrared emission · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 f latin small letter f U+0066 g latin small letter g U+0067 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072 t latin small letter t U+0074