Ir
English Dictionary
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Ir Definition
(n)
a
heavy
brittle
metallic
element
of
the
platinum
group
;
used
in
alloys
;
occurs
in
natural
alloys
with
platinum
or
osmium
(n)
a
board
of
the
British
government
that
administers
and
collects
major
direct
taxes
Ir Synonyms
atomic number 77
Inland Revenue
IR
iridium
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