[ 'hɛptα:ki ]
■ noun ( plural heptarchies ) a state or region consisting of seven autonomous regions.
↘government by seven rulers.
Derivatives
heptarchic -'tα:kɪk adjective
heptarchical -'tα:kɪk(ə)l adjective
Origin
C16: from hepta- + Gk arkhia 'rule', on the pattern of tetrarchy .