Blu-ray

[bloo-rey]

Trademark.

1. an optical disk or an optical disk format for the storage of high-definition video and audio, having a much larger capacity than a DVD.

   video games on Blu-ray; Blu-ray movies.

Blu-ray

noun

1. an optical disk used to store digital information such as high-definition video, and able to store more information than a standard DVD

Word History and Origins

Origin of Blu-ray¹

Blu-, respelling of blue (from the blue-violet laser used to read the disk) + (optical) ray

Word History and Origins

Origin of Blu-ray¹

C21: from the colour of the laser used to read and write this type of disc