noun, plural tri·ar·chies.
  1. government by three persons.
  2. a set of three joint rulers; a triumvirate.
  3. a country divided into three governments.
  4. a group of three countries or districts, each under its own ruler.

Origin of triarchy

First recorded in 1595–1605, triarchy is from the Greek word triarchía triumvirate. See tri-, -archy Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for triarchy

Historical Examples of triarchy

British Dictionary definitions for triarchy


noun plural -chies
  1. government by three people; a triumvirate
  2. a country ruled by three people
  3. an association of three territories each governed by its own ruler
  4. any of the three such territories
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012