noun
re-establishment; reorganization
Formal noun used for setting up something again, such as an organization, system, or facility. Often appears in official or business contexts.
委員会の再設が決定された。
The re-establishment of the committee was decided.
システムの再設には時間がかかる。
Reorganizing the system will take time.
Compound of 再 (sai, 'again') and 設 (setsu, 'establish'). The reading is on'yomi, and the word is a Sino-Japanese compound.