caustic potash

American  

noun

1. potassium hydroxide.

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caustic potash British  

noun

1. another name for potassium hydroxide

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Etymology

Origin of caustic potash

First recorded in 1865–70

Example Sentences

The fruits when triturated with a solution of caustic potash evolve a most unpleasant odour.

From Project Gutenberg

In most of the experiments it was most convenient to use caustic potash.

From Project Gutenberg

Whatever sets up the electric disturbance, whether it be the action of sulphuric acid on zinc, or caustic potash on iron, etc., is called electromotive force, generally abbreviated E.M.F.

From Project Gutenberg

But it contained a highly toxic concentration of potassium hydroxide, or caustic potash, and two teaspoons of it would have been a fatal dose.

From BBC

Lime deposits may be eliminated, or the salts may be precipitated in the form of non-adhering slimes, by introducing regularly a small amount of caustic potash or soda into the feed-water.

From Project Gutenberg