The Chinese word "炸药" is formed by combining the character "炸", meaning to explode, which itself is composed of the semantic radical "火" (fire) indicating its relation to combustion or blast, and the phonetic component "乍" (zhà) suggesting its pronunciation, with the character "药", meaning drug or substance, composed of the semantic radical "艹" (plant) hinting at herbal origins and the phonetic component "约" (yuē) for sound. Together, they create a compound word where "炸" conveys the explosive action and "药" denotes the material, resulting in the literal meaning "explosion drug" for explosives like dynamite.