noun
arranging seats by seniority
Archaic term for seating order based on age or rank. Not used in modern Japanese; the concept is now expressed with phrases like 年功序列の席順.
古い文献では、朝廷の儀式における序歯の作法が記されている。
In old documents, the protocol of arranging seats by seniority at court ceremonies is recorded.
Compound of 序 (order) and 歯 (teeth, age), referring to ordering by age. The exact historical derivation is uncertain; the spelling is conventionally associated with seniority-based seating.