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2 definitions found
From:
DICT.TW English-Chinese Dictionary 英漢字典
almucantar
高度方位儀
From:
Webster's Revised Unabridged Dictionary (1913)
Al·mu·can·tar
n.
Astron.
A
small
circle
of
the
sphere
parallel
to
the
horizon
;
a
circle
or
parallel
of
altitude
.
Two
stars
which
have
the
same
almucantar
have
the
same
altitude
.
See
Almacantar
. [
Archaic
]
Almucanter staff
,
an
ancient
instrument
,
having
an
arc
of
fifteen
degrees
,
formerly
used
at
sea
to
take
observations
of
the
sun's
amplitude
at
the
time
of
its
rising
or
setting
,
to
find
the
variation
of
the
compass
.
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