TSUMUGU · A2 (est.) · 字
細
細 ＝ 糸 ＋ 囟
ㄒㄧˋ · xì
adj — fine, thin; detailed
字源 FORM — what the parts do
糸義thread
囟聲xìn — gives the soundthe soft spot on a baby's skull — now written as 田 in 細
ITxìn → xì — initial and tone both move
A single silk thread (糸) is about as fine as anything gets. 囟 xìn — the tiny soft spot of a skull — carries the sound and has flattened to 田 in the modern glyph. From threadlike thinness: 細小、細節、仔細.
故事 STORY — a scene to remember it by
一根蠶絲（糸）細得幾乎看不見——再細不過了。
A single strand of silk (糸), almost too fine to see — nothing thinner.
字源記憶法
意 · Meanings
(本義)細小— fine, thin常用
→細節、仔細— detail; careful常用
⇒細菌— microscopic — the tiny
(本義) original meaning · → ⇒ each arrow = one more step of extension
關 · Related
紗shāboth take for thread; 細 ends in 田 (worn ), 紗 in 少