Phosphonium Definition

fŏs-fōnē-əm
noun
The monovalent radical PH4, which is related to PH3 as the ammonium radical NH4 is related to NH3
Webster's New World

Origin of Phosphonium

  • phosph(o)– (amm)onium

    From American Heritage Dictionary of the English Language, 5th Edition

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phosphonium