noun
absorption line
Technical term in physics, referring to a dark line in a spectrum caused by absorption of light at specific wavelengths.
太陽のスペクトルには多くの吸収線が見られる。
Many absorption lines can be seen in the solar spectrum.
The spectrum in which absorption lines appear.
Compound of 吸収 (absorption) and 線 (line), directly corresponding to the English term 'absorption line'.