PHOSPHONIUM
Meaning of PHOSPHONIUM in English
/fos foh"nee euhm/ , n. Chem.
the positively charged group PH 4 + .
[ 1865-70; PHOSPH(ORUS) + (AMM)ONIUM ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012