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infrared

DEFINITIONS OF: infrared

1

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

“infrared radiation”
“infrared photography”
Synonyms
invisible, unseeable
impossible or nearly impossible to see; imperceptible by the eye

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

Synonyms:
infrared emission, infrared light, infrared radiation
Type of:
actinic radiation, actinic ray
electromagnetic radiation that can produce photochemical reactions

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

“they could sense radiation in the infrared”
Synonyms:
infrared frequency
Type of:
frequence, frequency, oftenness
the number of occurrences within a given time period
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