hydrogen
English Dictionary
->
Letter H
-> hydrogen
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hydrogen Definition
(n)
a
nonmetallic
univalent
element
that
is
normally
a
colorless
and
odorless
highly
flammable
diatomic
gas
;
the
simplest
and
lightest
and
most
abundant
element
in
the
universe
hydrogen Synonyms
atomic number 1
H
hydrogen
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