Added 9 October 2026
infrared
/ˌɪnfɹəˈɹɛd/ noun
noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about infrared at Wordnik → Where our words come from →
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The infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range.
they could sense radiation in the infrared
- Electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves.