Definition of phosphate noun from the Oxford Advanced Learner's Dictionary

 

phosphate

 noun
noun
BrE BrE//ˈfɒsfeɪt//
 
; NAmE NAmE//ˈfɑːsfeɪt//
 
[countable, uncountable](chemistry)
 
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any compound containing phosphorus, used in industry or for helping plants to grow phosphate-free washing powder the use of nitrates and phosphates to fertilize the soil Word Origin late 18th cent.: from French, from phosphore ‘phosphorus’.
See the Oxford Advanced American Dictionary entry: phosphate