infrared

IPA: ɪnfrɝˈɛd

(uncountable) The electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation, having a wavelength between 700 nm and 1 mm.
(countable) A specific wavelength in this range.
(countable) A device that emits infrared radiation.

Having a wavelength in the infrared spectrum.
(figurative, physics) Relating to very low energies or very large distances or time spans.

Examples of "infrared" in Sentences

I bet he sees everything in infrared like the Predator, too.
And here, made with the 31-inch telescope at UVa's Fan Mountain in the infrared, is M51:
A spectacular satellite image of Alaska's Malaspina Glacier in infrared, near infrared, and green wavelengths.
Essentially, the badges have 4 LED lights that light up when you get within infrared range of other attendees with similar profiles.
Yep, the greenhouse effect works because light in the visible spectrum passes through “greenhouse” gases, while reradiated infrared is absorbed.
Anyone who understands chemistry also knows that carbon dioxide is a gas that transmits visible light, but attempts to retain infrared radiation.
Because the Predator can “sparkle” a target at night — mark it in infrared so that A-10 pilots and grunts on the ground can see it with their night-vision goggles — it opens up a range of options that pilots and infantry never had before.