plantocracy

[plan-tok-ruh-see]

noun, plural plan·toc·ra·cies.

government by plantation owners.
a ruling class of plantation owners.

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British Dictionary definitions for plantocracy

plantocracy

noun plural -cies

a ruling social class composed of planters
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