superphosphate
Americannoun
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Also called acid phosphate. a mixture of calcium acid phosphate and calcium sulfate prepared by treating phosphate rock with sulfuric acid: used chiefly as a fertilizer.
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Also called triple superphosphate. a mixture prepared with phosphoric acid and containing about 45 percent of soluble phosphates, used as a fertilizer.
noun
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a mixture of the diacid calcium salt of orthophosphoric acid Ca(H 2 PO 4 ) 2 with calcium sulphate and small quantities of other phosphates: used as a fertilizer
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a salt of phosphoric acid formed by incompletely replacing its acidic hydrogen atoms; acid phosphate; hydrogen phosphate
Etymology
Origin of superphosphate
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Do you have any idea how much aerial topdressing with superphosphate costs?
From Nature ● Oct. 12, 2011
The computer is telling me that an application of superphosphate between crops would be advantageous.”
From Nature ● Oct. 12, 2011
The Vinh-yen and Phutho plants produce superphosphate fertilizers essential to Ho's farms.
From Time Magazine Archive
Figure 6.—An advertisement with view of plant for manufacturing superphosphate about 1867.
From History of Phosphorus by Eduard Farber
Dr Griffiths recommends the following artificials: 3 parts weight of kainit, 2 parts of superphosphate, 1 part of nitrate of soda.
From The Book of Pears and Plums by Edward Bartrum
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