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Definition of astronomic
Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of astronomic is as below...
Astronomic
(a.)
Astronomical.
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Ecliptic
::
Ecliptic
(a.) A great
circle
drawn on a
terrestrial
globe,
making
an angle of 23ยก 28' with the
equator;
-- used for
illustrating
and
solving
astronomical
problems..
Year
::
Year (n.) The time of the
apparent
revolution
of the sun
trough
the
ecliptic;
the
period
occupied
by the earth in
making
its
revolution
around
the sun,
called
the
astronomical
year; also, a
period
more or less
nearly
agreeing
with this,
adopted
by
various
nations
as a
measure
of time, and
called
the civil year; as, the
common
lunar year of 354 days, still in use among the
Mohammedans;
the year of 360 days, etc. In
common
usage,
the year
consists
of 365 days, and every
fourth
year
(called
bissext
Almagest
::
Almagest
(n.) The
celebrated
work of
Ptolemy
of
Alexandria,
which
contains
nearly
all that is known of the
astronomical
observations
and
theories
of the
ancients.
The name was
extended
to other
similar
works..
Prutenic
::
Prutenic
(a.)
Prussian;
--
applied
to
certain
astronomical
tables
published
in the
sixteenth
century,
founded
on the
principles
of
Copernicus,
a
Prussian..
Rudolphine
::
Rudolphine
(a.)
Pertaining
to, or
designating,
a set of
astronomical
tables
computed
by
Kepler,
and
founded
on the
observations
of Tycho
Brahe;
-- so named from
Rudolph
II.,
emperor
of
Germany..
Sector
::
Sector
(n.) An
astronomical
instrument,
the limb of which
embraces
a small
portion
only of a
circle,
used for
measuring
differences
of
declination
too great for the
compass
of a
micrometer.
When it is used for
measuring
zenith
distances
of
stars,
it is
called
a
zenith
sector..
Table
::
Table (n.) Any
collection
and
arrangement
in a
condensed
form of many
particulars
or
values,
for ready
reference,
as of
weights,
measures,
currency,
specific
gravities,
etc.; also, a
series
of
numbers
following
some law, and
expressing
particular
values
corresponding
to
certain
other
numbers
on which they
depend,
and by means of which they are taken out for use in
computations;
as,
tables
of
logarithms,
sines,
tangents,
squares,
cubes,
etc.;
annuity
tables;
interest
tables;
astronomical
tables,
Reckoning
::
Reckoning
(n.) The
calculation
of a
ship's
position,
either
from
astronomical
observations,
or from the
record
of the
courses
steered
and
distances
sailed
as shown by
compass
and log, -- in the
latter
case
called
dead
reckoning
(see under
Dead);
-- also used for dead
reckoning
in
contradistinction
to
observation..
Sphere
::
Sphere
(n.) The
apparent
surface
of the
heavens,
which is
assumed
to be
spherical
and
everywhere
equally
distant,
in which the
heavenly
bodies
appear
to have their
places,
and on which the
various
astronomical
circles,
as of right
ascension
and
declination,
the
equator,
ecliptic,
etc., are
conceived
to be
drawn;
an ideal
geometrical
sphere,
with the
astronomical
and
geographical
circles
in their
proper
positions
on it..
Ptolemaist
::
Ptolemaist
(n.) One who
accepts
the
astronomical
system
of
Ptolemy.
Saros
::
Saros (n.) A
Chaldean
astronomical
period
or
cycle,
the
length
of which has been
variously
estimated
from 3,600 years to 3,600 days, or a
little
short of 10
years..
Armil
::
Armil (n.) An
ancient
astronomical
instrument.
Astrophysical
::
Astrophysical
(a.)
Pertaining
to the
physics
of
astronomical
science.
Astroscope
::
Astroscope
(n.) An old
astronomical
instrument,
formed
of two
cones,
on whose
surface
the
constellations
were
delineated..
Flexure
::
Flexure
(n.) The small
distortion
of an
astronomical
instrument
caused
by the
weight
of its
parts;
the
amount
to be added or
substracted
from the
observed
readings
of the
instrument
to
correct
them for this
distortion.
Libration Point
::
Libration
point (n.) any one of five
points
in the plane of a
system
of two large
astronomical
bodies
orbiting
each
other,
as the
Earth-moon
system,
where the
gravitational
pull of the two
bodies
on an
object
are
approximately
equal,
and in
opposite
directions.
A solid
object
moving
in the same
velocity
and
direction
as such a
libration
point will
remain
in
gravitational
equilibrium
with the two
bodies
of the
system
and not fall
toward
either
body..
Almanac
::
Almanac
(n.) A book or
table,
containing
a
calendar
of days, and
months,
to which
astronomical
data and
various
statistics
are often
added,
such as the times of the
rising
and
setting
of the sun and moon,
eclipses,
hours of full tide,
stated
festivals
of
churches,
terms of
courts,
etc..
Plane
::
Plane (a.) An ideal
surface,
conceived
as
coinciding
with, or
containing,
some
designated
astronomical
line,
circle,
or other
curve;
as, the plane of an
orbit;
the plane of the
ecliptic,
or of the
equator..
Refraction
::
Refraction
(n.) The
change
in the
direction
of a ray of
light,
and,
consequently,
in the
apparent
position
of a
heavenly
body from which it
emanates,
arising
from its
passage
through
the
earth's
atmosphere;
-- hence
distinguished
as
atmospheric
refraction,
or
astronomical
refraction..
Astronomical
::
Astronomical
(a.) Of or
pertaining
to
astronomy;
in
accordance
with the
methods
or
principles
of
astronomy.
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