sidereal
a . 星的,恒星的,以星球的运行为基准的
星的,恒星的,以星球的运行为基准的
sidereal adj 1 :
of or relating to the stars or constellations ; "
sidereal bodies "; "
the sidereal system "
2 : (
of divisions of time )
determined by daily motion of the stars ; "
sidereal time " [
ant : {
civil }]
Sidereal \
Si *
de "
re *
al \,
a . [
L .
sidereus ,
from sidus ,
sideris ,
a constellation ,
a star .
Cf . {
Sideral }, {
Consider }, {
Desire }.]
1 .
Relating to the stars ;
starry ;
astral ;
as ,
sidereal astronomy .
[
1913 Webster ]
2 . (
Astron .)
Measuring by the apparent motion of the stars ;
designated ,
marked out ,
or accompanied ,
by a return to the same position in respect to the stars ;
as ,
the sidereal revolution of a planet ;
a sidereal day .
[
1913 Webster ]
{
Sidereal clock }, {
day }, {
month }, {
year }.
See under {
Clock },
{
Day },
etc .
{
Sideral time },
time as reckoned by sideral days ,
or ,
taking the sidereal day as the unit ,
the time elapsed since a transit of the vernal equinox ,
reckoned in parts of a sidereal day .
This is ,
strictly ,
apparent sidereal time ,
mean sidereal time being reckoned from the transit ,
not of the true ,
but of the mean ,
equinoctial point .
[
1913 Webster ]
Month \
Month \ (
m [
u ^]
nth ),
n . [
OE .
month ,
moneth ,
AS .
m [=
o ]
n [
eth ],
m [=
o ]
na [
eth ];
akin to m [=
o ]
na moon ,
and to D .
maand month ,
G .
monat ,
OHG .
m [=
a ]
n [=
o ]
d ,
Icel .
m [=
a ]
nu [
eth ]
r ,
m [=
a ]
na [
eth ]
r ,
Goth .
m [=
e ]
n [=
o ][
thorn ]
s . [
root ]
272 .
See {
Moon }.]
One of the twelve portions into which the year is divided ;
the twelfth part of a year ,
corresponding nearly to the length of a synodic revolution of the moon , --
whence the name .
In popular use ,
a period of four weeks is often called a month .
[
1913 Webster ]
Note :
In the common law ,
a month is a lunar month ,
or twenty -
eight days ,
unless otherwise expressed .
--
Blackstone .
In the United States the rule of the common law is generally changed ,
and a month is declared to mean a calendar month . --
Cooley '
s Blackstone .
[
1913 Webster ]
{
A month mind }.
(
a )
A strong or abnormal desire . [
Obs .] --
Shak .
(
b )
A celebration made in remembrance of a deceased person a month after death . --
Strype .
{
Calendar months },
the months as adjusted in the common or Gregorian calendar ;
April ,
June ,
September ,
and November ,
containing 30 days ,
and the rest 31 ,
except February ,
which ,
in common years ,
has 28 ,
and in leap years 29 .
{
Lunar month },
the period of one revolution of the moon ,
particularly a synodical revolution ;
but several kinds are distinguished ,
as the {
synodical month },
or period from one new moon to the next ,
in mean length 29 d .
12 h .
44 m .
2 .
87 s .;
the {
nodical month },
or time of revolution from one node to the same again ,
in length 27 d .
5 h .
5 m .
36 s .;
the {
sidereal },
or time of revolution from a star to the same again ,
equal to 27 d .
7 h .
43 m .
11 .
5 s .;
the {
anomalistic },
or time of revolution from perigee to perigee again ,
in length 27 d .
13 h .
18 m .
37 .
4 s .;
and the {
tropical },
or time of passing from any point of the ecliptic to the same again ,
equal to 27 d .
7 h .
43 m .
4 .
7 s .
{
Solar month },
the time in which the sun passes through one sign of the zodiac ,
in mean length 30 d .
10 h .
29 m .
4 .
1 s .
[
1913 Webster ]
48 Moby Thesaurus words for "
sidereal ":
Cynthian ,
anagalactic ,
asteroidal ,
astral ,
astrologic ,
astrologistic ,
astrologous ,
astronomic ,
astrophysical ,
celestial ,
circumplanetary ,
cislunar ,
empyreal ,
empyrean ,
equinoctial ,
extragalactic ,
galactic ,
heavenly ,
heliacal ,
intercosmic ,
interplanetary ,
intersidereal ,
interstellar ,
lunar ,
lunary ,
lunate ,
lunular ,
lunulate ,
meteoric ,
meteoritic ,
nebular ,
nebulose ,
nebulous ,
planetal ,
planetarian ,
planetary ,
planetesimal ,
semilunar ,
solar ,
sphery ,
star -
spangled ,
star -
studded ,
starry ,
stellar ,
stellary ,
terrestrial ,
uranic ,
zodiacal
安装中文字典英文字典查询工具!
中文字典英文字典工具:
复制到剪贴板
英文字典中文字典相关资料:
My Account - GEICO A new Flutter project You may be eligible for a Multi-Policy discount if you bundle your auto insurance with homeowners, renters, or condo insurance Get a quote and see how much you could save
Make An Insurance Payment Online, By Phone More | GEICO Make a payment on any of your GEICO Insurance Policies Pay your car, home, motorcycle and other insurance policies online, by phone, or by mail
An Insurance Company For Your Car And More | GEICO Get insurance from a company that's been trusted since 1936 See how much you can save with GEICO on insurance for your car, motorcycle, and more
Contact GEICO Customer Service: Chat, Email More | GEICO Contact GEICO customer service and support for all your insurance needs by Chat, phone, email, or via a local agent
Car Insurance – Get a Fast Auto Quote and Save | GEICO Get a free car insurance quote with GEICO We'll help you find auto insurance coverage at the right price - start an online quote now!
Claims Center | Report Or Check An Insurance Claim | GEICO Whether you need to report an insurance claim or you're looking for claims information, it's all right here
Contact GEICO | GEICO Contact GEICO insurance for all your insurance needs We also have specific phone numbers for individual insurance products and services
Homeowners Insurance - Get a Free Home Insurance Quote | GEICO Secure your home with a homeowners insurance policy through GEICO Insurance Agency Get started with a free homeowners insurance quote today!
Independent Agents | GEICO FAQs for Independent Agents What is GEICO exploring? We're actively exploring how we can meet the needs of more customers by partnering with independent agents to offer GEICO in their agency and grow their business with us
GEICO Careers GEICO Cares Our dedicated community and volunteerism program, GEICO Cares, connects employees with opportunities to volunteer with non-profit organizations throughout the year both at the office during quarterly We Care Wednesday events and in local communities