helium
English Dictionary
->
Letter H
-> helium
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helium Definition
(n)
a
very
light
colorless
element
that
is
one
of
the
six
inert
gasses
;
the
most
difficult
gas
to
liquefy
;
occurs
in
economically
extractable
amounts
in
certain
natural
gases
(
as
those
found
in
Texas
and
Kansas
)
helium Synonyms
atomic number 2
He
helium
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