Definition of Heliacal
He`li´a`cal
a.
1.
(Astron.)
Emerging
from
the
light
of
the
sun
,
or
passing
into
it
;
rising
or
setting
at
the
same
,
or
nearly
the
same
,
time
as
the
sun
.
Related Words
heliac
,
sun
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Heir apparent
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