infrared
adjective/ˌɪnfrəˈrɛd/
Frequency rank: #5,976 of 20,003 in the WORDED list (wordfreq data)
Meaning
relating to electromagnetic radiation with wavelengths longer than visible light but shorter than microwaves, perceived as heat.
Example sentence
The security camera uses infrared technology to detect movement in the dark.
Synonyms & related words
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