equinoctial
n . 春分或秋分时的暴风雨
a . 春分或秋分的
春分或秋分时的暴风雨春分或秋分的
equinoctial adj 1 :
relating to the vicinity of the equator 2 :
relating to an equinox (
when the lengths of night and day are equal )
n 1 :
the great circle on the celestial sphere midway between the celestial poles [
synonym : {
celestial equator }, {
equinoctial circle }, {
equinoctial line }, {
equinoctial }]
Equator \
E *
qua "
tor \,
n . [
L .
aequator one who equalizes :
cf .
F .
['
e ]
quateur equator .
See {
Equate }.]
1 . (
Geog .)
The imaginary great circle on the earth '
s surface ,
everywhere equally distant from the two poles ,
and dividing the earth '
s surface into two hemispheres .
[
1913 Webster ]
2 . (
Astron .)
The great circle of the celestial sphere ,
coincident with the plane of the earth '
s equator ; --
so called because when the sun is in it ,
the days and nights are of equal length ;
hence called also the {
equinoctial },
and on maps ,
globes ,
etc .,
the {
equinoctial line }.
[
1913 Webster ]
{
Equator of the sun }
or {
Equator of a planet } (
Astron .),
the great circle whose plane passes through through the center of the body ,
and is perpendicular to its axis of revolution .
{
Magnetic equator }.
See {
Aclinic }.
[
1913 Webster ]
Equinoctial \
E `
qui *
noc "
tial \,
a . [
L .
aequinoctials ,
fr .
aequinoctium equinox :
cf .
F . ['
e ]
quinoxial .
See {
Equinox }.]
1 .
Pertaining to an equinox ,
or the equinoxes ,
or to the time of equal day and night ;
as ,
the equinoctial line .
[
1913 Webster ]
2 .
Pertaining to the regions or climate of the equinoctial line or equator ;
in or near that line ;
as ,
equinoctial heat ;
an equinoctial sun .
[
1913 Webster ]
3 .
Pertaining to the time when the sun enters the equinoctial points ;
as ,
an equinoctial gale or storm ,
that is ,
one happening at or near the time of the equinox ,
in any part of the world .
[
1913 Webster ]
{
Equinoctial colure } (
Astron .),
the meridian passing through the equinoctial points .
{
Equinoctial line } (
Astron .),
the celestial equator ; --
so called because when the sun is on it ,
the nights and days are of equal length in all parts of the world .
See {
Equator }.
[
1913 Webster ]
Thrice the equinoctial line He circled . --
Milton .
{
Equinoctial points } (
Astron .),
the two points where the celestial and ecliptic intersect each other ;
the one being in the first point of Aries ,
the other in the first point of Libra .
{
Equinoctial time } (
Astron .)
reckoned in any year from the instant when the mean sun is at the mean vernal equinoctial point .
[
1913 Webster ]
Equinoctial \
E `
qui *
noc "
tial \,
n .
The equinoctial line .
[
1913 Webster ]
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