noun
mercury fulminate
A highly sensitive explosive compound used in detonators and primers. Technical term in chemistry and pyrotechnics.
雷酸水銀は衝撃に非常に敏感な爆薬である。
Mercury fulminate is an explosive that is extremely sensitive to shock.
Compound of 雷酸 (fulminic acid) and 水銀 (mercury). The exact historical derivation is uncertain; the spelling is conventionally associated with the chemical meaning.