TSUMUGU · B2 (est.) · 字
衍
衍 ＝ 行 ＋ 氵
ㄧㄢˇ · yǎn
verb — to overflow, spread out, derive
字源 FORM — what the parts do
氵義water
Water (氵) set in the road (行) — the river running its course to the sea (水朝宗于海也). From water spreading out, anything that extends and multiplies: 衍生、推衍.
故事 STORY — a scene to remember it by
河水從窄處湧出，順著大路一路漫開，越流越寬，直到入海。
Water (氵) breaks loose and spreads down the road (行), wider and wider, on toward the sea.
字源記憶法
意 · Meanings
(本義)衍流、漫衍— to overflow, spread out
→衍生、推衍— to derive, extend, multiply常用
→衍文— a redundant inserted character (in a text)
(本義) original meaning · → ⇒ each arrow = one more step of extension