olemus
peene eraldusvõimega (televisioon, video, audio, graafika),
ka vormingu- ja tootenimedes

Wiktionary:
high definition, noun
1. (uncountable) enhanced picture quality on a TV or any other display
2. (countable) a television or display device displaying images in an enhanced picture quality format or such images

ülevaateid
https://en.wikipedia.org/wiki/High_definition

https://en.wikipedia.org/wiki/High-definition_television

https://en.wikipedia.org/wiki/High-definition_video

https://cloudinary.com/guides/video-formats/hd-format-history-of-hd-video-and-8-formats-you-should-know