TSUMUGU · TOCFL C1 (est.) · 字
宙
宙 ＝ 宀 ＋ 由
ㄓㄡˋ · zhòu
noun — endless time, the span of the cosmos
字源 FORM — what the parts do
宀義a roof
{y,zh}IFTyóu → zhòu — the y hardens to zh, rime and tone shift with it
A roof (宀) over 由, which carries the sound — yóu worn across to zhòu, the initial hardening. Where 宇 holds all of space, 宙 holds all of time: 宇宙、上下四方曰宇，往古來今曰宙.
故事 STORY — a scene to remember it by
從古到今，時間一截接一截（由）——撐在同一個屋頂（宀）下。
Out of the past and into the now, span after span (由) of time — all held under one roof (宀).
字源記憶法
意 · Meanings
(本義)宙— the span of all time
→宇宙— the cosmos — space and time together常用
(本義) original meaning · → ⇒ each arrow = one more step of extension