phosphoric

This term is primarily used in technical, chemical, and industrial contexts. It specifically describes substances derived from or containing phosphorus in a particular oxidation state, most commonly associated with the acid H3PO4. It is rarely used in casual conversation and is almost exclusively paired with nouns like acid, ester, or compounds.

Because it is a specialized chemical adjective, it does not possess a comparative or superlative form. It describes a fixed chemical property rather than a gradable quality.