noun
100th-day memorial service
A Buddhist memorial ceremony held on the 100th day after a person's death. Rare term; not commonly encountered outside specialized Buddhist contexts.
幽回忌は、故人の死後百日目に行われる法要です。
Yūkaiki is a memorial service held on the 100th day after a person's death.
The term is composed of 幽 (yū, 'dim, secluded, faint') and 回忌 (kaiki, 'death anniversary'), but the exact derivation is uncertain. It is a specialized Buddhist term.