HD
2 antonyms for HD — opposites grouped by meaning.
Adjective — Describing video, screens or images with a much higher pixel resolution than the older standard, giving a sharper and more detailed picture.
Antonyms
SD
standard-definition
How to use HD
The word patterns that sound natural to a native speaker.
in HD
HD video
HD stream
HD quality
Neutral in everyday and commercial use; now slightly dated as a selling point, since 4K has become the premium label.
Etymology
An abbreviation of high definition.
Full origin of HD →Frequently asked questions
What is the difference between HD and Full HD?
HD normally means 1280x720 pixels, often labelled 720p. Full HD means 1920x1080, or 1080p, which has roughly twice as many pixels and a noticeably sharper image. Both are lower resolution than 4K, which is about four times Full HD.
Does HD ever mean something else?
Yes, in narrower contexts. In medicine HD can stand for Huntington's disease or haemodialysis, and in computing it sometimes means hard disk. But in everyday use it almost always means high definition.
