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Webster's 1913 Dictionary
PENTACID
PENTACID
Pen
*
tac
"
id
(
Etym:
[
Penta-
+
acid.
] (
Chem.
)
Defn:
Capable
of
neutralizing,
or
combining
with,
five
molecules
of
a
monobasic
acid;
having
five
hydrogen
atoms
capable
of
substitution
by
acid
residues; --
said
of
certain
complex
bases.
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