"phosphorus oxynitride" meaning in English

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        "an inorganic polymer, of empirical formula PON, used as a flame retardant etc"
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        "(chemistry) an inorganic polymer, of empirical formula PON, used as a flame retardant etc"
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  "word": "phosphorus oxynitride"
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        "(chemistry) an inorganic polymer, of empirical formula PON, used as a flame retardant etc"
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