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Webster's 1913 Dictionary
SULPHONIUM
Sul
*
pho
"
ni
*
um,
n.
Etym:
[
Sulphur
+
ammonium.
] (
Chem.
)
Defn: A
hypothetical
radical,
SH3,
regarded
as
the
type
and
nucleus
of
the
sulphines.
The Wordsmith Dictionary
The Wordsmith Dictionary