- 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.
- Also called triple superphosphate. a mixture prepared with phosphoric acid and containing about 45 percent of soluble phosphates, used as a fertilizer.
Origin of superphosphate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for superphosphate
It has also been used for mixing with superphosphate of lime.Manures and the principles of manuring
Charles Morton Aikman
Impure chloride of magnesium mixed with superphosphate of lime.Cooley's Practical Receipts, Volume II
There are even drills for dropping water combined with superphosphate.Knowledge is Power:
Finally they are watered with water containing molasses and superphosphate of lime, as recommended by Corenwinder.
Good results will also follow an application of bone meal or superphosphate at the rate of from 300 to 500 pounds per acre.The Practical Garden-Book
C. E. Hunn
- 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
- a salt of phosphoric acid formed by incompletely replacing its acidic hydrogen atoms; acid phosphate; hydrogen phosphate
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012