purpurogallin
English
Etymology
From
Latin
purpura
(
“
purple
”
)
-o-
+
gall
+
-in
.
Noun
purpurogallin
(
uncountable
)
A
red
crystalline
compound
, the
aglycon
of several
glycosides
from
nutgalls
and
oak
barks
.