SUPERPHOSPHATE

Etymology

Noun

superphosphate (countable and uncountable, plural superphosphates)

A fertilizer produced by the action of concentrated sulfuric acid on powdered phosphate rock.

A phosphate containing the greatest amount of phosphoric acid that can combine with the base.

Source: Wiktionary

Su`per*phos"phate, n. (Chem.)

Definition: An acid phosphate. Superphosphate of lime (Com. Chem.), a fertilizer obtained by trating bone dust, bone black, or phosphorite with sulphuric acid, whereby the insoluble neutral calcium phosphate, Ca3(PO4)2, is changed to the primary or acid calcium phosphate Ca(H2PO4)2, which is soluble and therefore available for the soil.

Source: Webster’s Unabridged Dictionary 1913 Edition

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