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sodium metaphosphate

noun

Definition of sodium metaphosphate 

1 : any of several crystalline sodium salts NaPO3 or (NaPO3)n of a metaphosphoric acid: such as

a : the water-soluble cyclic trimetaphosphate (NaPO3)3 or NaPO3 I

b : sodium Kurrol's salt NaPO3 IV

2a : a water-soluble sodium phosphate glass having the composition of a sodium metaphosphate

— called also sodium (1:1) phosphate

— compare sodium hexametaphosphate

b : sodium phosphate glass

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