How to Write 腈 (jīng) — Meaning “Nitrile”

Imagine a bright green moon (月 + 青) made of soft acrylic fiber. Since 腈 appears in 腈纶 (acrylic fiber), picture a green moon-shaped sweater to link the character to its common use.

Write the left radical 月 with two short horizontal lines inside, keeping it narrow. The right side 青 has eight strokes: start with three horizontal strokes on top, then a vertical line, followed by a horizontal fold, a vertical stroke, and a final horizontal line. A common mistake is making the 月 too wide, which throws off the balance.

All three use the 月 radical, but their right sides differ. 腈 has 青 (green), 朔 has 屰 (meaning reverse), and 朕 has 关 (a gate-like component). Their meanings are also unrelated: 腈 is for chemical terms, 朔 means the first day of the lunar month, and 朕 is an old imperial pronoun for "I" or "we".

腈 appears mainly in chemical and industrial contexts, especially in words like 腈纶 (acrylic fiber) on clothing labels and 丙烯腈 (acrylonitrile) in manufacturing. It is not used in daily conversation but is important for textiles and chemistry fields.

Common words containing 腈 include: 腈纶 (jīng lún) — Acrylic fiber; 腈基 (jīng jī) — Cyano group; 丙烯腈 (bǐng xī jīng) — Acrylonitrile.