selenium
English Dictionary
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selenium Definition
(n)
a
toxic
nonmetallic
element
related
to
sulfur
and
tellurium
;
occurs
in
several
allotropic
forms
;
a
stable
gray
metallike
allotrope
conducts
electricity
better
in
the
light
than
in
the
dark
and
is
used
in
photocells
;
occurs
in
sulfide
ores
(
as
pyrite
)
selenium Synonyms
atomic number 34
Se
selenium
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