Au
English Dictionary
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Letter A
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Au Definition
(n)
a
soft
yellow
malleable
ductile
(
trivalent
and
univalent
)
metallic
element
;
occurs
mainly
as
nuggets
in
rocks
and
alluvial
deposits
;
does
not
react
with
most
chemicals
but
is
attacked
by
chlorine
and
aqua
regia
(n)
a
unit
of
length
used
for
distances
within
the
solar
system
;
equal
to
the
mean
distance
between
the
Earth
and
the
Sun
(
approximately
93
million
miles
or
150
million
kilometers
)
Au Synonyms
Astronomical Unit
atomic number 79
AU
gold
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