名詞 infrared:

1. the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range
   同義詞：infrared frequency
2. electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
   同義詞：infrared light, infrared radiation, infrared emission

形容詞 infrared:

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

1. Any of several devices that convert incident electromagnetic radiation of mixed frequencies to one or more discrete frequencies of highly amplified and coherent ultraviolet, visible, or infrared radiation.
   激光器使偶然的混雜頻率的電磁輻射，變?yōu)橐粋€(gè)或更多的高度強(qiáng)化和連續(xù)的紫外線、可見光或紅外線輻射的分離頻率儀器中的一種

in.fra.red

adj.Abbr. IR（形容詞）縮寫 IR
Of or relating to the range of invisible radiation wavelengths from about 750 nanometers, just longer than red in the visible spectrum, to millimeter, on the border of the microwave region.
紅外線的：一種波長在750毫微米（比可見光譜中的紅光稍長）與毫米（在微波波長的邊緣）之間的不可見輻射的，或與其有關(guān)的
Generating, using, or sensitive to infrared radiation.
產(chǎn)生紅外線的：產(chǎn)生或使用紅外線輻射的，對紅外線輻射敏感的
n.（名詞）
Infrared light or the infrared part of the spectrum.
紅外線：紅外線光或光譜的紅外線部分