metaphosphate

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met·a·phos·phate

M0247800 (mĕt′ə-fŏs′fāt′)n. A salt, ester, or anion of metaphosphoric acid.

metaphosphate

(ˌmɛtəˈfɒsfeɪt) n (Elements & Compounds) any salt of metaphosphoric acid

met•a•phos•phate

(ˌmɛt əˈfɒs feɪt)

n. a salt or ester of metaphosphoric acid. [1825–35]