meridian
noun
məˈrɪdiən
noun
1
one
of
the
imaginary
lines
from
the
North
Pole
to
the
South
Pole,
drawn
on
a
map
of
the
Earth
子午线，经线
C
2
the meridian
the
highest
point
reached
by
the
sun
or
another
star,
when
seen
from
a
point
on
the
Earth’s
surface
[术语] 〔从地球表面某一点观测到的太阳或其他星体达到的〕最高点
technical