n
(astronomy) a solar eclipse in which the thin outer disk of the sun can be seen as a ring around the moon
n
(meteorology, optics) The glory optical phenomenon.
n
A meteorological optical phenomenon similar to a crepuscular ray, but appearing opposite the Sun in the sky.
n
(rare) The region from which an occulting body appears entirely contained within the disc of the light source.
n
(figuratively) The moment of greatest success, expansion, etc.
n
(figuratively) The highest point.
n
(astronomy) A feature of total solar eclipses. As the moon "grazes" by the sun during a solar eclipse, the rugged lunar limb topography allows beads of sunlight to shine through in some places and not in others.
n
(meteorology, astronomy) A very rare phenomenon observed in the morning or evening when the sun is crossing or immediately below the horizon, in which a momentary flash of blue light appears above the upper rim of the solar disk, caused by refraction of light in the atmosphere.
n
(astronomy, obsolete, rare) An aurora.
n
An optical phenomenon, a large, brightly spectrum-coloured band running parallel to the horizon, formed by the refraction of sunlight or moonlight in plate-shaped ice crystals suspended in the atmosphere, typically in cirrus or cirrostratus clouds.
n
The luminous plasma atmosphere of the Sun (the solar corona) or other star, extending millions of kilometres into space, most easily seen during a total solar eclipse.
n
A sunbeam seen just after sunset or just before sunrise, caused by a cloud below the horizon and dust particles in the air above the horizon.
n
(astronomy) A spurious circle around the true circle of the Sun.
n
(astronomy) The attainment of the highest point of altitude reached by a heavenly body; passage across the meridian; transit.
n
(astronomy) An optical phenomenon visible during a moment of a solar eclipse when only a tiny part of the sun is not obscured by the moon, shining like a diamond in the ring of the sun’s corona.
n
sunlight reflected from the Earth's surface
n
(astronomy) Reflected earthlight visible on the Moon's night side.
v
(transitive) Of astronomical or atmospheric bodies, to cause an eclipse.
n
(military) The point on the surface of the earth directly above an underground explosion.
n
(usually countable, literary, also figuratively) The vault of the heavens, where the clouds, sun, moon, and stars can be seen; the heavens, where the clouds, sun, moon, planets, and stars can be seen; the heavens, the sky , the sky.
n
Space as it is directly perceived by the senses.
n
(astronomy) A marking on the surface of the sun associated with a solar prominence.
n
(meteorology, optics) An optical phenomenon, consisting of concentric rings and somewhat similar to a rainbow, caused by sunlight or moonlight interacting with the water droplets that compose mist or clouds, centered on the antisolar or antilunar point.
n
(astronomy, meteorology) An upper atmospheric optical phenomenon associated with thunderstorms, a compact blue starter.
n
A circular band of coloured light, visible around the sun or moon etc., caused by reflection and refraction of light by ice crystals in the atmosphere.
adj
Of or relating to the rising of a star when it first becomes visible just before sunrise in the eastern sky, having previously been made invisible by sunlight, or the analogous situation of its setting just after sunset.
n
(astronomy) The entrance of the Moon into the shadow of the Earth in eclipses, or the Sun's entrance into a sign, etc.
n
(astronomy) Synonym of ICME
n
(astronomy) The top of a loop.
n
(astronomy) A spot or fleck on the sun that is brighter than the surrounding surface.
n
(navigation) The angle between the Moon and another celestial body.
n
(astronomy) The passage of the Moon, as it moves through the nighttime sky, in front of a celestial object, such as a star or planet.
n
(astronomy) The arc of a circle described by the Sun, or a star, in the night.
n
The point near the North Pole that is most distant from solid land; the centre of the largest circle that fits entirely in the Arctic Ocean
n
(physics) A bobbing motion that accompanies the precession of a spinning rigid body.
n
Any object, natural or man-made, that blocks the light of an object from an observer, typically used in reference to astronomical events.
n
A light in which the total duration of light in each period is clearly longer than the total duration of darkness and in which the intervals of darkness (occultations) are all of equal duration.
n
A diffuse whitish image of the Sun, having the same altitude, at an angular distance of about 120° due to reflection from atmospheric ice-prisms.
n
(meteorology) A luminous halo, each side of the sun parallel to the horizon, caused by refraction of sunlight through ice crystals.
n
A bright spot in the sky due to the refraction of the sun’s image by ice crystals.
n
Alternative form of parhelion [A bright spot in the sky due to the refraction of the sun’s image by ice crystals.]
n
(astronomy) The path traced on the Earth's surface by the moon's shadow (more precisely, the umbra) during a total eclipse of the sun.
n
(space science) A mountain peak, on a solid, non-luminous celestial body, which experiences continuous or near-continuous illumination due to a combination of high altitude, very high latitude, and being on a celestial body with very low axial tilt.
n
(astronomy) A region around the edge of a sunspot, darker than the sun's surface but lighter than the middle of the sunspot.
n
(figuratively) The highest point or state; the peak, zenith.
n
(astronomy) A particular appearance or state in a regularly recurring cycle of changes with respect to quantity of illumination or form, or the absence, of its enlightened disk. Illustrated in Wikipedia's article Lunar phase.
n
(astronomy) A bright region in the chromosphere of the Sun.
n
(obsolete) The space from the earth's surface out to the orbit of the moon: properly called the elemental region.
adj
(astronomy) Of a celestial object, moving upwards relative to the horizon after a period of having moved downwards.
n
(astronomy) The twinkling of a star or other celestial body caused by turbulence in the Earth's atmosphere.
n
(historical, rare) An aerostatic signalling apparatus.
n
(astronomy) The upper atmosphere of the sun, only visible during a total solar eclipse
n
(astronomy) A phenomenon occurring when the Moon passes between the Earth and the sun.
n
(astronomy) A violent explosion in the Sun's atmosphere.
n
(astronomy, obsolete) Sunspots.
n
(countable, figuratively) A field, area, or sphere of activity or endeavour.
n
(astronomy) A jet of matter ejected from the photosphere of the sun.
n
(astronomy) A small radial emission of gas seen in the chromosphere and corona of the sun.
n
(astronomy, meteorology) an upper atmospheric optical phenomena associated with thunderstorms, diffuse disk shaped glows that precede sprites and propagate downward
adj
Having the shape or appearance of little stars; radiated.
n
A rare halo, formed by internal reflection through ice crystals, that curves upwards from the horizon and touches the tricker arc above the anthelic point.
n
(astronomy) A region of abrupt transition from rotation to convection in the interior of the sun.
n
(astronomy) An eclipse in which the eclipsed body is completely obscured to the viewer.
n
(astronomy) The phase of an eclipse when it is total.
n
(obsolete) The eclipse of a celestial object.
n
(neologism) A photographed analemma that includes an image of a solar eclipse.
n
(astronomy) The central region of a sunspot.
n
On a shadow in the shape of a right triangle, the length of the shadow's edge adjacent to a measured angle.
n
On a shadow in the shape of a right triangle, the length of the shadow's edge opposite to a measured angle.
n
(astronomy) The highest point in the sky reached by a celestial body.
adj
(rare) Of, pertaining to, or characteristic of a zenith.
n
(astronomy) The dust that makes up the zodiacal cloud and gives rise to the zodiacal light
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