halo

halo-

(word root) saltExamples of words with the root halo-: halophyte

ha·lo

H0030800 (hā′lō)n. pl. ha·los or ha·loes 1. a. A luminous ring or disk of light surrounding the heads or bodies of sacred figures, such as saints, in religious paintings; a nimbus.b. A ring or disk resembling the halo of a sacred figure: "She had a halo of red hair floating over a delicate ivory face" (Judith Ortiz Cofer).c. A feeling of glory, reverence, or admiration associated with a person or thing: "By the 1930s, insulin's halo had begun to tarnish, for it became clear that patients who had the illness ... were prone to problems of the small blood vessel" (James S. Hirsch).2. a. A circular band of colored light around a light source, as around the sun or moon, caused by the refraction and reflection of light by ice particles suspended in the intervening atmosphere.b. A roughly spherical region of relatively dust-free space surrounding a galaxy and extending beyond the visible parts of the galaxy. Galactic halos contain stars (often located in globular clusters), gas, and dark matter.tr.v. ha·loed, ha·lo·ing, ha·loes To encircle with a halo.

[Medieval Latin halō, from accusative of Latin halōs, from Greek, threshing floor, disk of or around the sun or moon.]

halo

(ˈheɪləʊ) n, pl -loes or -los1. (Art Terms) a disc or ring of light around the head of an angel, saint, etc, as in painting or sculpture2. the aura surrounding an idealized, famous, or admired person, thing, or event3. (Physical Geography) a circle of light around the sun or moon, caused by the refraction of light by particles of ice4. (Astronomy) astronomy a spherical cloud of stars surrounding the Galaxy and other spiral galaxiesvb, -loes, -los, -loing or -loedto surround with or form a halo[C16: from Medieval Latin, from Latin halōs circular threshing floor, from Greek] ˈhalo-ˌlike adj

ha•lo

(ˈheɪ loʊ)

n., pl. -los, -loes, n. 1. Also called nimbus. the representation, as in pictures or statuary, of a radiant light, usu. in the shape of a disk, ring, or rayed form, above or around the head of a divine, holy, or greatly exalted personage. 2. something suggesting such a light or shape. 3. nimbus (def. 2). 4. any of a variety of bright circles or arcs centered on the sun or moon, caused by the refraction or reflection of light by ice crystals suspended in the earth's atmosphere (disting. from corona). v.t. 5. to surround with a halo. v.i. 6. to form a halo. [1555–65; < Latin, acc. of halōs circle round sun or moon < Greek hálōs orig., disk, threshing floor]

halo-

a combining form meaning “salt” (halophyte), “halogen” (halothane). [< Greek, comb. form of háls salt]

ha·lo

(hā′lō) A hazy ring of colored light in the sky around the sun, the moon, or a similar bright object. It is caused by the reflection and refraction of light through ice crystals suspended in the upper atmosphere.

halo

Past participle: haloed
Gerund: haloing

Imperative
halo
halo

Present
I halo
you halo
he/she/it haloes/halos
we halo
you halo
they halo

Preterite
I haloing
you haloing
he/she/it haloing
we haloing
you haloing
they haloing

Present Continuous
I am haloing
you are haloing
he/she/it is haloing
we are haloing
you are haloing
they are haloing

Present Perfect
I have haloed
you have haloed
he/she/it has haloed
we have haloed
you have haloed
they have haloed

Past Continuous
I was haloing
you were haloing
he/she/it was haloing
we were haloing
you were haloing
they were haloing

Past Perfect
I had haloed
you had haloed
he/she/it had haloed
we had haloed
you had haloed
they had haloed

Future
I will halo
you will halo
he/she/it will halo
we will halo
you will halo
they will halo

Future Perfect
I will have haloed
you will have haloed
he/she/it will have haloed
we will have haloed
you will have haloed
they will have haloed

Future Continuous
I will be haloing
you will be haloing
he/she/it will be haloing
we will be haloing
you will be haloing
they will be haloing

Present Perfect Continuous
I have been haloing
you have been haloing
he/she/it has been haloing
we have been haloing
you have been haloing
they have been haloing

Future Perfect Continuous
I will have been haloing
you will have been haloing
he/she/it will have been haloing
we will have been haloing
you will have been haloing
they will have been haloing

Past Perfect Continuous
I had been haloing
you had been haloing
he/she/it had been haloing
we had been haloing
you had been haloing
they had been haloing

Conditional
I would halo
you would halo
he/she/it would halo
we would halo
you would halo
they would halo

Past Conditional
I would have haloed
you would have haloed
he/she/it would have haloed
we would have haloed
you would have haloed
they would have haloed

Thesaurus

Noun	1.	halo - an indication of radiant light drawn around the head of a saintgloriole, aura, aureole, nimbus, glorylightness, light - the visual effect of illumination on objects or scenes as created in pictures; "he could paint the lightest light and the darkest dark"
	2.	halo - a toroidal shape; "a ring of ships in the harbor"; "a halo of smoke"anchor ring, annulus, doughnut, ringfairy circle, fairy ring - a ring of fungi marking the periphery of the perennial underground growth of the myceliumtoroid - the doughnut-shaped object enclosed by a torus
	3.	halo - a circle of light around the sun or moonatmospheric phenomenon - a physical phenomenon associated with the atmosphereparhelic circle, parhelic ring, solar halo - a luminous halo parallel to the horizon at the altitude of the sun; caused by ice crystals in the atmosphere

halo

noun ring of light, aura, corona, radiance, nimbus, halation (Photography), aureole or aureola The sun had a faint halo round it.

Translations

光环晕轮绘于神像头上的光环

halo

(ˈheiləu) – plural ˈhalo(e)s – noun1. a ring of light round the sun or moon. （环绕日月的）晕轮，光环 2. a similar ring of light round the head of a holy person in a picture etc. 绘于神像头上的光环

halo

halo,

in art: see nimbusnimbus
, in art, the luminous disk or circle or other indication of light around the head of a sacred personage. It was used in Buddhist and other Asian art and by the early Greeks and Romans to designate gods and heroes and appeared in Christian art in the 5th cent.
..... Click the link for more information. .

halo,

in meteorology, short-lived circles or arcs, and less commonly spikes and crosses, of colored or whitish light surrounding the moon or sun or in clouds as seen from above. A halo occurs when the light from the sun or the moon is refracted and reflected by ice crystals in the atmosphere, usually in a thin layer of high cirrostratus clouds. Under certain circumstances a second, or outer, halo appears, which is fainter than the inner one. At times white or colored luminous arcs are also seen lying somewhat parallel to the horizon and passing through the source of light, called mock suns, parhelia, or sun dogs for the sun, and paraselenae for the moon. A single mock sun, the anthelion, directly opposite the sun, may be added. In general a white halo results from the reflection of light by ice crystals, while one which appears as colored rings results from the refraction of light by ice crystals. Halos are more brilliant and complex near the poles than in other parts of the world. The theory attributing their formation to the presence of ice crystals was first suggested by the 17th cent. French philosopher Descartes. Similar to a halo and sometimes confused with it is the sun's coronacorona,
luminous envelope surrounding the sun, outside the chromosphere. Its density is less than one billionth that of the earth's atmosphere. The corona is visible only at the time of totality during a total eclipse of the sun.
..... Click the link for more information. . In X-ray electron diffraction, the term halos refers to the broad rings that appear on a photographic film as a result of the diffraction of a monoenergetic beam of X rays or electrons from a crystalline powder located at the center of the camera.

halo

1. See Galaxy. 2. See dark halo. 3. See Donati's comet.

Halo

several optical phenomena in the atmosphere that are due to the refraction and reflection of light by ice crystals forming cirrus clouds and fogs.

There is a great variety of halo phenomena: they take the form of iridescent (for refraction) and white (for reflection) bands, spots, arcs, and circles in the firmament. The most common forms are iridescent circles around the disk of the sun or moon at an angular radius of either 22° or 46°; parhelia, or “mock suns,” which are bright iridescent spots to the right and left of the sun or moon at distances of 22°, rarely at 46°; a circumzenithal arc, which is a segment of an iridescent arc touching the upper point of a 46-degree circle that turns its convex side toward the sun; a parhelic circle, which is a white horizontal circle passing across the disk of the luminary; a column, which is part of a white vertical circle passing across the luminary’s disk; and a white cross formed by the combination of the parhelic circle with the column. Halos differ from coronas, which, though outwardly alike, have other origins related to diffraction.

In order for certain halos to occur, ice crystals, which have the shape of six-sided prisms, must be oriented the same way or predominantly the same way with respect to the vertical. The theory of halos has been developed in detail. Thus, the 22-degree parhelia occur because of the refraction of rays in the vertically oriented crystals when a ray passes through the faces forming angles of 60°; the 46-degree circle is created by refraction when the faces form angles of 90°; and the vertical and horizontal circles are obtained as a result of reflection from horizontal and vertical faces of the crystals.

REFERENCE

Minnaert, M. Svet i tsvet v prirode. Moscow, 1958. (Translated from English.)

Halo

(in optics), the light background around the image of a source of optical radiation that can be observed by the eye or recorded by a light detector. Halos are caused by light scattering at small angles in the medium through which the light is passing.

The size, color, and brightness of a halo depend on the dimensions and physical nature of the particles of the medium and on the optical thickness of the medium. Scattering at small angles, resulting in the formation of halos, is especially strong in media of small optical thickness with particles whose dimensions are greater than the wavelength λ of the radiation (the Mie effect). If the dimensions of the particles greatly exceed λ, the intensity of scattering is independent of λ. This explains, for example, the “white” color of the halo surrounding the solar disk (the combination of rays with different λ gives white light). Halos significantly affect the resolving power of photographic materials and luminescent screens and, consequently, the quality of the images produced by them. The character of a halo is taken into account in measuring the transparency of scattering media; in particular, the change in the brightness and spectral distribution of light in the solar halo is a criterion of atmospheric purity and transparency.

L. N. KAPORSKII

What does it mean when you dream about a halo?

A dream of oneself with a halo may signify that perfection is a goal for the dreamer. Alternatively, it may represent an exaggerated “holier than thou” attitude.

halo

[′hā·lō] (astronomy) A type of ray system in which many short, filamentary streaks form a complex network of bright matter surrounding the lunar crater. Also known as nimbus. (electronics) An undesirable bright or dark ring surronding an image on the fluorescent screen of a television cathode-ray tube; generally due to overloading or maladjustment of the camera tube. (geology) A ring or crescent surrounding an area of opposite sign; it is a diffusion of a high concentration of the sought mineral into surrounding ground or rock; it is encountered in mineral prospecting and in magnetic and geochemical surveys. (meteorology) Any one of a large class of atmospheric optical phenomena which appear as colored or whitish rings and arcs about the sun or moon when seen through an ice crystal cloud or in a sky filled with falling ice crystals. (optics) A ring around the photographic image of a bright source caused by light scattering in any one of a number of possible ways.

halo

i. The luminous effect produced by the refraction and reflection of light by prismatic ice crystals present in the cirrus and cirrostratus clouds. It is a white circle or prismatic arc of a circle, with the sun or the moon at the center. They are of two different radii: in the first case, the halo subtends an angle of 22°, whereas, in the other case, it subtends an angle of 46°. The coloration of a halo changes from red inside to blue outside. This is just the opposite of that in a corona-green and blue are usually too weak to be seen.
ii. A high-altitude, low-opening (HALO) paradrop system. The paratroopers jump from aircraft at very high altitudes and open their parachutes at very low heights. This technique ensures rapid infiltration and tactical surprise. The latter is achieved as the paratroopers can jump from the aircraft, which is flying some distance away from the drop zone.
iii. The reflection of cockpit instruments seen in a canopy at night.
iv. The colored ring seen on clouds in the direction away from the sun (i.e., with the aircraft's shadow at the center). Also called a pilot's halo.
v. A bright ring around the spot produced by a beam of electrons striking the fluorescent coating in a cathode-ray tube.

halo

1. a disc or ring of light around the head of an angel, saint, etc., as in painting or sculpture 2. a circle of light around the sun or moon, caused by the refraction of light by particles of ice 3. Astronomy a spherical cloud of stars surrounding the Galaxy and other spiral galaxies

halo

halo-

ha·lo

halo

ha•lo

halo-

ha·lo

halo

halo

halo

halo

halo,

halo,

halo

Halo

REFERENCE

Halo

What does it mean when you dream about a halo?

halo

halo

halo

HALO

halo

Synonyms for halo

noun ring of light

Synonyms

Synonyms for halo

noun an indication of radiant light drawn around the head of a saint

Synonyms

Related Words

noun a toroidal shape

Synonyms

Related Words

noun a circle of light around the sun or moon

Related Words