Translation guide
HD is an abbreviation for 'high definition', referring to video or image quality. In Japanese, it is almost always used as-is in katakana, or in compound terms.
The learner wants to refer to HD quality in the context of video, TV, images, or displays.
The most common way to say 'HD' in Japanese. Used in everyday conversation about TV, video, etc. Pronounced as the English letters.
このテレビはHDに対応しています。
This TV supports HD.
A Japanese-coined term for high-definition television, originally a brand name but now widely used. Often implies broadcast or TV-specific HD.
A technical term meaning 'high definition' or 'high resolution'. Used in specifications or formal contexts, not in everyday conversation.
In most casual and technical contexts, simply saying 'HD' (エイチディー) is perfectly understood. 'ハイビジョン' is more associated with television broadcasting. Avoid literal translations like '高い定義' as they are not used.
ハイビジョン放送が始まりました。
High-definition broadcasting has started.
高精細画像を表示する。
Display high-definition images.