Definition of Rubidium
Ru`bid´i`um
n.
1.
(Chem.)
A
rare
metallic
element
of
the
alkali
metal
series
,
atomic
number
37
.
It
occurs
quite
widely
,
but
in
small
quantities
,
and
always
combined
.
It
is
isolated
as
a
soft
yellowish
white
metal
,
analogous
to
potassium
in
most
of
its
properties
.
Symbol
Rb
.
Atomic
weight
,
85
.
48
.
Related Words
atomic
number
37
,
carnallite
,
lepidolite
,
metal
,
metallic
element
,
pollucite
,
Rb
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rubelet
rubella
rubella virus
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Rubicelle
Rubicon
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Rubify
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Ruby of arsenic
Ruby of zinc
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