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[dahy-ahr-kee] /ˈdaɪ ɑr ki/
noun, plural diarchies.
government in which power is vested in two rulers or authorities.
Also, dyarchy.
1825-35; di-1 + -archy
Related forms
diarchial, diarchic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for diarchy


noun (pl) -chies
government by two states, individuals, etc
Derived Forms
diarchic, diarchical, diarchal, dyarchic, dyarchical, dyarchal, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for diarchy

system of double government introduced by the Government of India Act (1919) for the provinces of British India. It marked the first introduction of the democratic principle into the executive branch of the British administration of India. Though much-criticized, it signified a breakthrough in British Indian government and was the forerunner of India's full provincial autonomy (1935) and independence (1947). Dyarchy was introduced as a constitutional reform by E.S. Montagu (secretary of state for India, 1917-22) and Lord Chelmsford (viceroy of India, 1916-21).

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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