ＨＤ

noun

HD; high definition

Refers to high-definition video or image quality. Common in contexts like TV, monitors, and cameras.

• このテレビはＨＤ画質えいち・でぃーがしつに対たい応おうしている。

  This TV supports HD picture quality.

noun

hard disk

Computing term for a hard disk drive. Often used in compound terms like ＨＤＤ.

• 外そと付づけＨＤをパソコンに接せつ続ぞくする。

  Connect an external hard disk to the computer.

noun

hemodialysis

Medical abbreviation for hemodialysis. Used in clinical settings; the full term is 血液透析.

See also: 血液透析

• 患かん者じゃは週しゅうに三さん回かいＨＤを受うけている。

  The patient receives hemodialysis three times a week.

noun which may take the genitive case particle 'no'

heavy-duty

Used as a no-adjective to describe equipment or materials designed for heavy use. Often seen in product names.

• ＨＤ仕し様ようの工こう具ぐは現げん場ばで長なが持もちする。

  Heavy-duty tools last longer on the worksite.

noun, used as a suffix

Holdings

Suffix used in company names to indicate a holding company. Based on the English abbreviation.

See also: ホールディングス

• ソフトバンクグループは持もち株かぶ会がい社しゃで、正せい式しき名めい称しょうに「ＨＤ」が付つく。

  SoftBank Group is a holding company, and its official name includes 'HD'.