infrared
Intermediate (B1)
IPA: /ˌɪnfrəˈrɛd/
KK: /ˌɪnfrəˈrɛd/
adjective
Definition
Relating to a type of radiation that is not visible to the human eye but can be felt as heat, typically found just beyond the red end of the visible light spectrum.
Example
The infrared camera can detect heat emitted by objects, even in complete darkness.
Conversation
Have you ever tried using an infrared thermometer?
No, I haven't! What makes it different from a regular one?
It measures temperature without direct contact, using infrared radiation.
That sounds really useful! I should get one for my cooking.
Synonyms & Antonyms
Synonyms
thermal
radiant
heat
Antonyms
ultraviolet
visible
cold
noun
Definition
A type of light that is not visible to the human eye but can be felt as heat; it is part of the electromagnetic spectrum.
Example
The remote control uses infrared signals to communicate with the television.
Conversation
Did you know that some cameras can detect infrared light?
Really? I had no idea those types of cameras existed.
Yeah, they can capture images that our eyes can't see, like heat signatures.
Root Explanation
Infrared is formed from "infra-" (meaning below) and "red" (referring to the color red). The term describes electromagnetic radiation that has a wavelength longer than that of visible red light, thus meaning below red.
Memory Tip
Think of 'infra-' meaning 'below' and 'red' as the color — infrared refers to light that is below the visible red spectrum.
Visually Confused Words
infare
intrabred
infarcted
winfred