TSUMUGU · TOCFL A2 (est.) · 字
屆
屆 ＝ 尸 ＋ 凷
ㄐㄧㄝˋ · jiè
verb — to reach, fall due; measure word — a session, a term
字源 FORM — what the parts do
尸義a body, bent low
凷形a clod, a hard lump below
A body (尸) bent over a hard clod (凷) — pressed to the very ground, reaching the limit. From hitting that bound comes 屆: a time fallen due, and the session it marks off: 屆時、本屆.
故事 STORY — a scene to remember it by
身子（尸）一路低下去，壓到硬土（凷）為止——到頭了。
The body (尸) sinks lower and lower until it meets the hard clod (凷) — and can go no further.
字源記憶法
意 · Meanings
(本義)屆— to reach, fall due
→屆時— when the time comes常用
⇒本屆、一屆— this session, a term
(本義) original meaning · → ⇒ each arrow = one more step of extension