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அங்குச நீறு

[ Angusaneeru]

a. பூநீறு.

b. A very light, white coloured saline efflorescence found in soils impregnated with carbonate of soda. (Scientists consider this to be impure for the reason perhaps, that there are certain rules prescribed for collecting the substance from soils of Fuller’s earth).
For fuller details see under பூநீறு.