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DI

German, noun

DI is spelled D-I (2 letters) and appears 47 times per million words in written German, the 1,815th most frequent German word form (wordfreq, 2021 data). DI is a German noun meaning “initialism of Dipl.-Ing. (an abbreviation of Diplomingenieur or Diplomingenieurin.)” (English Wiktionary, September 2026). On this page, Di. is a different word: “abbreviation of Dienstag "Tuesday"”.

What does DI mean in English?

noun

  1. 1

    initialism of Dipl.-Ing. (an abbreviation of Diplomingenieur or Diplomingenieurin.)

prefix

as di-
  1. 1

    di-

noun

as Di.
  1. 1

    abbreviation of Dienstag "Tuesday"

Source: English Wiktionary, German section, dump of September 2, 2026 (CC BY-SA 4.0).

How German dictionaries define it

abbreviation: 1. Dienstag

abbreviation: 1. Dienstag

prefix: 1. auseinander, zwischen, zer-, un- 2. durch, hindurch, auseinander 3. zweimal, zweifach

abbreviation: 1. österreichisch: Diplomingenieur(in)

The definition in the German Wiktionary, in German.

Source: German Wiktionary, dump of September 1, 2026 (CC BY-SA 4.0), through kaikki.org.

Forms of DI

  • Di. alternative
  • dis- alternative
  • dia- alternative
  • Dipl.-Ing. variant

Source: English Wiktionary and German Wiktionary (dumps of September 2, 2026 and September 1, 2026).

English words that translate to DI

Source: the translation tables of the English Wiktionary, dump of September 2, 2026.

How common is DI in German?

DI appears 47 times per million words in written German.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

What to look up after DI