noun
institutions bequeathed from the past; surviving customs; legacy systems
Refers to customs, systems, or institutions that have been handed down from earlier times and still remain in effect. Often used in historical or formal contexts.
この村には、江戸時代の遺制が今も残っている。
In this village, institutions from the Edo period still remain today.
古い遺制を改革する必要がある。
It is necessary to reform the old legacy systems.
Compound of 遺 (い, 'leave behind, bequeath') and 制 (せい, 'system, institution'). The term refers to systems or institutions that have been left behind from the past.