noun, plural tri·ar·chies.
government by three persons.
a set of three joint rulers; a triumvirate.
a country divided into three governments.
a group of three countries or districts, each under its own ruler.
Origin of triarchy
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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Historical Examples of triarchy
Triarchy, trī′ar-ki, n. government by three persons: a state governed by three persons.
noun plural -chies
government by three people; a triumvirate
a country ruled by three people
an association of three territories each governed by its own ruler
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