Definition of superphosphate in English:

superphosphate

Syllabification: su·per·phos·phate
Pronunciation: /ˈso͞opərˌfäsˌfāt
 
/

noun

A fertilizer made by treating phosphate rock with sulfuric or phosphoric acid.
More example sentences
  • Now is the time to add any of the soil amendments, such as bone meal, blood meal, or superphosphate, that provide a slow, continuous supply of phosphorus.
  • Add a tablespoon of equal parts bone meal and superphosphate to each hole, then cover the fertilizer with a little sand.
  • Plant from mid-October through November in a loose, fertile soil enriched with bone meal or superphosphate.

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