entries → 直徑
TSUMUGU · TOCFL 5 (est.) · 詞
直徑 word · TOCFL 5 (est.)
直徑 ＝ 直 ＋ 徑
ㄓˊ ㄐㄧㄥˋ · zhíjìng
noun — diameter (a straight line through the centre of a circle)

字源 FORM — what the parts do

直straight (直線)zhí
徑a path; the through-line (路徑)jìngthe step 彳, with 巠 jīng for the sound
直徑，直線的直，路徑的徑。

故事 STORY — a scene to remember it by

一條直（直）的路（徑），穿過圓的正中央。
One straight (直) path (徑), driven through the dead centre of the circle.
字源記憶法
關 · Related
半徑bànjìnghalf of it — the radius, the same 徑