The Collaborative International Dictionary
Phospham
Phospham \Phos"pham\, n. [Phosphorus + ammonia.] (Chem.) An inert amorphous white powder, PN2H, obtained by passing ammonia over heated phosphorus. [Spelt also phosphame.] -- Phos"pham"ic, a.
Wiktionary
phospham
n. (context inorganic compound English) A polymeric phosphorus nitride amide, of general formula [NPNH]n, obtained by the reaction of phosphorus with ammonia.