American English

Definition of infrared adjective from the Oxford Advanced American Dictionary

 

infrared

 adjective
adjective
NAmE//ˌɪnfrəˈrɛd//
 
(physics)
 
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having or using electromagnetic waves that are longer than those of red light in the spectrum, and that cannot be seen infrared radiation an infrared lamp compare ultraviolet
See the Oxford Advanced Learner's Dictionary entry: infrared