Dictionary

phosphonium

noun phos·pho·ni·um \fäs-ˈfō-nē-əm\

Definition of PHOSPHONIUM

:  a monovalent cation PH4+ analogous to ammonium and derived from phosphine; also :  an organic derivative of phosphonium (as (C2H5)4P+)
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Origin of PHOSPHONIUM

New Latin
First Known Use: 1871
Medical Dictionary

phosphonium

noun phos·pho·ni·um \fäs-ˈfō-nē-əm\

Medical Definition of PHOSPHONIUM

:  a monovalent cation PH4+ analogous to ammonium and derived from phosphine; also :  an organic derivative of phosphonium (as (C2H5)4P+)

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