Blu-ray
/ˈbluːˌreɪ/noun
mass noun
- a format of DVD designed for the storage of high-definition video and data蓝光（技术）（一种储存高清晰度录像和数据的DVD制式）。
词源
early 21st cent.: from blu, a respelling of BLUE1 (from the colour of the laser used to read and write this type of DVD), + RAY1.