
• (a.) Pertaining to, or designating, a monobasic acid, HPO3, analogous to nitric acid, and, by heating phosphoric acid, obtained as a crystalline substance, commonly called glacial phosphoric acid.
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http://thinkexist.com/dictionary/meaning/metaphosphoric/

Met`a·phos·phor'ic adjective [ Prefix meta- + phosphoric .] (Chemistry) Pertaining to, or designating, a monobasic acid, HPO 3 , analogous to nitric acid, and, by heating phosphoric acid, obtained as a crystalline substance, commonly called glacial phosphoric acid
Found on
http://www.encyclo.co.uk/webster/M/56
No exact match found.