Blu-ray
proper noun
- high-definition DVD format
Wiktionary
Pronunciation: [ˈbluːˌɹeɪ]
noun
Etymology: From blue + ray, coming from the blue laser ray having a shorter wavelength and making a higher data density possible.
- The Blu-ray Disc format.
“I've bought some of my old favourites on Blu-ray.”
“In 2007, Pioneer announced the release of a Blu-ray drive that can record data to Blu-ray discs, as well as DVDs and CDs.”
- A Blu-ray Disc.