Myriarchy

//ˈmɪɹiˌɑɹki// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A government of 10,000 people. obsolete, rare
  2. 2
    A regiment of 10,000 soldiers, especially (historical) a Mongolian toman.
  3. 3
    An area controlled by a Mongolian myriarch and theoretically comprising 10,000 households. historical

Etymology

From myriarch + -y, after the pattern of heptarchy etc.; see myriarch for more. As a military unit, Calque of Mongolian түмэн (tümen).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.