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pyroxylin
pyroxyline
Pyrrhic
Pyrrhic victory
Pyrrhicist
Pyrrhocoridae
Pyrrhonean
Pyrrhonism
Pyrrhonist
Pyrrhotine
pyrrhotite
Pyrrhula
Pyrrhula pyrrhula
pyrrhuloxia
Pyrrhuloxia sinuata
Pyrrhus
-- pyrrol --
Pyrroline
Pyrrophyta
Pyrrosia
Pyrrosia lingua
Pyrula
Pyrularia
Pyrularia pubera
Pyruric
Pyrus
Pyrus communis
Pyruvic
pyruvic acid
Pyruvil
Pythagoras
Pythagorean
Pythagorean letter
pyrrol
pyr´rol
n.
1.
(Chem.)
A
nitrogenous
heterocyclic
base
found
in
coal
tar
,
bone
oil
,
and
other
distillates
of
organic
substances
,
and
also
produced
synthetically
as
a
colorless
liquid
,
C4H5N
,
having
on
odor
like
that
of
chloroform
.
It
is
the
nucleus
and
origin
of
a
large
number
of
derivatives
.
So
called
because
it
colors
a
splinter
of
wood
moistened
with
hydrochloric
acid
a
deep red
.
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