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Definition of Caustic potash
1. Noun. A potassium compound often used in agriculture and industry. 
Medical Definition of Caustic potash
1. KOH;a strong, penetrating caustic. Synonym: caustic potash. (05 Mar 2000)
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1. Noun. A potassium compound often used in agriculture and industry. 
1. KOH;a strong, penetrating caustic. Synonym: caustic potash. (05 Mar 2000)