Definition of grand duchy in English:

grand duchy

Syllabification: grand duch·y

noun

  • A state or territory ruled by a grand duke or duchess.
    More example sentences
    • June 9, 1815, after 400 years of domination by various European nations, Luxembourg was made a grand duchy by the Congress of Vienna.
    • Led by William's daughter, the Grand Duchess, the grand duchy cooperated with the Germans in their unlawful violation of Luxembourg's neutrality during World War I.
    • Belgium became part of a new kingdom of the Netherlands and then, after 1831, a separate realm in her own right; Luxembourg became an independent grand duchy.

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