硝
Mnemonic
This stone bears an eerie resemblance to sugar crystals — but it's nitrate, deadly saltpeter! A soldier licks the stone, tasting its resemblance to table salt. He grinds it, packs it into a cannon barrel. The nitrate ignites — BOOM!
Additional thoughts
Saltpeter (potassium nitrate) really does form on stones as white crystals resembling sugar or salt. The visual of a crystalline stone you could mistake for something harmless anchors both radicals: stone + resemblance to something sweet = explosive nitrate.Quick recall
A stone with a resemblance to sugar crystals is actually explosive nitrate — BOOM!Details
The keyword for 硝 is nitrate. This kanji refers to niter or saltpeter, a naturally occurring mineral compound (potassium nitrate) that has been historically important in the production of gunpowder, fertilizers, and various chemical processes. It carries the sense of a crystalline, mineral substance with oxidizing properties. The character is closely associated with chemistry and explosives, appearing in compounds like 硝酸 (nitric acid) and 硝煙 (gunpowder smoke).
- On'yomi
- しょう