superphosphate

noun su·per·phos·phate \ ˌsü-pər-ˈfäs-ˌfāt \

Definition of superphosphate

1 : an acid phosphate
2 : a soluble mixture of phosphates used as fertilizer and made from insoluble mineral phosphates by treatment with sulfuric acid

First Known Use of superphosphate

1798


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