平へい成せいの大だい合がっ併ぺい

expression, noun

Heisei-era great municipal mergers; large-scale municipal mergers of the Heisei era

Refers to the wave of municipal mergers in Japan between 1995 and 2010, driven by the temporary Special Mergers Law. Often used in historical, political, or administrative contexts.

See also: 平成

• 平へい成せいの大だい合がっ併ぺいによって、全ぜん国こくの市し町ちょう村そんの数かずは大おお幅はばに減げん少しょうした。

  Due to the Heisei-era great mergers, the number of municipalities nationwide decreased significantly.

• この地ち域いきでは、平へい成せいの大だい合がっ併ぺいで新あたらしい市しが誕たん生じょうした。

  In this region, a new city was born through the Heisei-era great mergers.