noun
color rendering index; CRI
Technical term in lighting and color science; often abbreviated as CRI. See also 演色性.
See also: 演色性
このLED照明は演色評価数が高いので、色が自然に見えます。
This LED lighting has a high color rendering index, so colors look natural.
演色性 is a broader term for color rendering properties, while 演色評価数 specifically refers to the numerical index (CRI).
Compound of 演色 (color rendering) + 評価 (evaluation) + 数 (number). A modern technical term.