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Definition: Ultra HD

(1) See also SeeCube and Ultra HD Blu-ray.

(2) (Ultra High Definition) A TV or monitor with 2,160 lines (see 4K TV) or 4,320 lines of resolution (see 8K TV). Years ago, Ultra HD (UHD) referred to 1,080 lines, which today is increasingly rare on new TVs and should be the bare minimum for any computer screen. See 1080p and high-resolution monitor.

Ultra HD Computer Monitor
In 2014, Dell's first Ultra HD monitor delivered a 3840x2160 4K resolution on a 27.5" screen. (Image courtesy of Dell Inc.)