deceased grandmother
Archaic term used in historical or classical contexts to refer to one's late grandmother. Not used in everyday modern Japanese.
In old documents, '祖妣' is written, referring to a deceased grandmother.
deceased grandmother of the emperor
Composed of 祖 (ancestor) and 妣 (deceased mother/grandmother). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning 'deceased grandmother' in classical Chinese-influenced Japanese.