noun
cosmic microwave background radiation; CMB
Technical term in cosmology; often abbreviated as CMB. Refers to the thermal radiation left over from the Big Bang.
宇宙マイクロ波背景放射は、ビッグバンの名残と考えられている。
The cosmic microwave background radiation is thought to be a remnant of the Big Bang.
Compound of 宇宙 (uchū, 'universe') + マイクロ波 (maikuroha, 'microwave') + 背景 (haikei, 'background') + 放射 (hōsha, 'radiation'). A direct translation of the English term.