phosphorus oxynitride
An inorganic polymer, of empirical formula PON, used as a flame retardant etcAn inorganic polymer, of empirical formula PON, used as a flame retardant etc
Meaning
1 senses(uncountable)An inorganic polymer, of empirical formula PON, used as a flame retardant etc
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable