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Webster 1913 Edition
Phosphonium
Phos-pho′ni-um
,Noun.
[
Phosph
orus + ammonium
.] (Chem.)
The hypothetical radical
PH4
, analogous to ammonium, and regarded as the nucleus of certain derivatives of phosphine. Definition 2024
phosphonium
phosphonium
English
Noun
phosphonium (plural phosphoniums)
- (chemistry) the tetravalent positively-charged phosphorus cation R4P+
Derived terms
- phosphonium iodide