名词 infrared:

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

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

形容词 infrared:

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

INFRAL=Information Retrieval Automatic Language 自动化情报检索语言infraadv.（书等的）下文；在下面infratemporalis颞下的inframarginalia下缘板infrastructuraladj.基础的；基础结构的(尤指社会、国家赖以生存和发展的)infrarefraction红外折射infralobar part叶下部infrasonic wave[化] 次声波inframandibular[医] 下颌下的inframammillary乳头下的infra-orbitaladj.亚轨道的infraepisternum下前侧片