いこう移行ikou
1.
The process of changing from one system or jurisdiction to another, typically involving adjustments or adaptations to a new state or framework.
2.
A temporary method or arrangement employed during the transition between an old system and a new system.
3.
The act of gradually moving or evolving from one condition or phase to another, often implying a planned or systematic shift.
Example:
英国は、１９７１年にその貨幣制度を１０進法に移行させた。