entries → 擴散
TSUMUGU · TOCFL C1 (est.) · 詞
擴散 word · TOCFL C1 (est.)
擴散 ＝ 擴 ＋ 散
ㄎㄨㄛˋ ㄙㄢˋ · kuòsàn
verb — to spread out, to diffuse, to disperse over a wider area

字源 FORM — what the parts do

擴to widen, to expand (擴大)kuò
散to scatter, to disperse (分散)sàn
擴散，擴大的擴，分散的散。

故事 STORY — a scene to remember it by

邊界往外拉寬（擴），東西就一路散開出去（散）。
The edges pull outward (擴) and the thing scatters along with them (散), reaching wider and wider.
記憶法
關 · Related
蔓延mànyánto creep and spread — of fire or disease, a near-twin擴大kuòdàto enlarge — the same 擴, widening in scale