memorial service for Nichiren
A memorial service for Nichiren held on the 13th day of the 10th month in Nichiren Buddhism. The term is specific to this tradition.
See also: 会式
The memorial service for Nichiren is held on October 13th every year.
Standard spelling with honorific prefix お.
Alternate spelling using the kanji 御 for the honorific prefix.
From お (honorific prefix) + 会式 (Buddhist memorial service). The term is specifically associated with the memorial service for Nichiren.