Dictionary Check: infrared

"infrared" is a valid word!

Scrabble 12 points
Words with Friends 13 points

Definition

adjective

having or employing wavelengths longer than light but shorter than radio waves; lying outside the visible spectrum at its red end

Example: "infrared radiation"
noun

the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range

Example: "they could sense radiation in the infrared"
Synonyms:
noun

electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves

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