Wiktionary
mineral acid
n. (lb en inorganic chemistry) Any inorganic acid, especially common acids such as sulfuric acid, nitric acid, phosphoric acid etc.
Wikipedia
Usage examples of "mineral acid".
Like con- centrated mineral acid, he retorted, 'I'm on the level here, Captain Sheepfucker.
When that singular substance is analyzed by the chemists, it yields a vegetable oil and a mineral acid.