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The Collaborative International Dictionary

Pluto \Plu"to\, [Also spelled rop. .]n. [L., fr. Gr. ?.]

  1. (Class. Myth.) The son of Saturn and Rhea, brother of Jupiter and Neptune; the dark and gloomy god of the Lower World.

  2. The ninth planet of the Solar System, the smallest (5700 km radius) and most distant from the sun. The suggestion has been made that it more closely resembles a large close comet than a planet. Its orbit has an eccentricity of 0.248, larger than that of any other planet; it varies from 4.44 to 7.37 billion km distance from the sun.

    Pluto is an oddball among its eight sister planets. It's the smallest in both size and mass, and has the most elliptical orbit. It moves in a plane tilted markedly away from the other planets' orbits. Moreover, Pluto is the only planet made almost entirely of ice.
    --Ron Cohen (Science News, Feb. 27, 1999, p. 139)

    {Pluto monkey (Zo["o]l.), a long-tailed African monkey ( Cercopithecus pluto), having side whiskers. The general color is black, more or less grizzled; the frontal band is white.

Douglas Harper's Etymology Dictionary

Roman god of the underworld, brother of Zeus and Neptune, from Latin Pluto, Pluton, from Greek Plouton "god of wealth," literally "wealth, riches," probably originally "overflowing," from PIE *pleu- "to flow" (see pluvial). The planet (since downgraded) was discovered 1930 by C.W. Tombaugh; Minerva also was suggested as a name for it. The cartoon dog first appeared in Walt Disney's "Moose Hunt," released April 1931.


vb. (context neologism English) To demote or devalue something.


Pluto ( minor-planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond Neptune. It was the first Kuiper belt object to be discovered. It is the largest and second-most-massive known dwarf planet in the Solar System and the ninth-largest and tenth-most-massive known object directly orbiting the Sun. It is the largest known trans-Neptunian object by volume but is less massive than Eris, a dwarf planet in the scattered disc. Like other Kuiper belt objects, Pluto is primarily made of ice and rock and is relatively small—about one-sixth the mass of the Moon and one-third its volume. It has a moderately eccentric and inclined orbit during which it ranges from 30 to 49 astronomical units or AU (4.4–7.4 billion km) from the Sun. This means that Pluto periodically comes closer to the Sun than Neptune, but a stable orbital resonance with Neptune prevents them from colliding. Light from the Sun takes about 5.5 hours to reach Pluto at its average distance (39.5 AU).

Pluto was discovered by Clyde Tombaugh in 1930, and was originally considered the ninth planet from the Sun. After 1992, its planethood was questioned following the discovery of several objects of similar size in the Kuiper belt. In 2005, Eris, which is 27% more massive than Pluto, was discovered, which led the International Astronomical Union (IAU) to define the term "planet" formally for the first time the following year. This definition excluded Pluto and reclassified it as a member of the new "dwarf planet" category.

Pluto has five known moons: Charon (the largest, with a diameter just over half that of Pluto), Styx, Nix, Kerberos, and Hydra. Pluto and Charon are sometimes considered a binary system because the barycenter of their orbits does not lie within either body. The IAU has not formalized a definition for binary dwarf planets, and Charon is officially classified as a moon of Pluto.

On July 14, 2015, the New Horizons spacecraft became the first spacecraft to fly by Pluto. During its brief flyby, New Horizons made detailed measurements and observations of Pluto and its moons.

Pluto (Astro Boy)

, known as Bruton in the English dubbed 1980 Astro Boy television series, is a fictional character created by Osamu Tezuka. He was introduced in story arc of the Astro Boy manga. He then appeared in numerous appearances, such as the 1980s series and the 2003 series remake. He even appeared in his own manga. The robot is presumably named after Pluto, the god of the underworld.

Pluto (Portuguese band)

Pluto is a Portuguese band, which emerged from the splitting up of Ornatos Violeta (in 2002), where Manel Cruz (frontman and vocalist) and Peixe (guitarist) played. The others members are Eduardo (bass guitar) and Ruka (drums).

Their first album, Bom Dia (Good Morning), was released on 18 October 2004, entering straight to the 6th place of the Portuguese chart.

Pluto (Marvel Comics)

Pluto is a fictional deity appearing in American comic books published by Marvel Comics. The character is based on the Greco-Roman god of the same name.

Pluto (New Zealand band)

Pluto is a New Zealand rock band from Auckland. Their album Pipeline Under The Ocean, released in 2005 went double platinum on the RIANZ albums chart.

Pluto (comics)

Pluto, in comics, may refer to:

  • Pluto (Marvel Comics), a Marvel Comics supervillain and fictional god
  • Pluto (Disney), a Disney character and pet of Mickey Mouse who has appeared in various comic book adaptations
  • Pluto (Astro Boy), a villain in the Astro Boy manga
  • Pluto (manga), an Astro Boy spin-off named after the character
Pluto (Disney)

Pluto, also called Pluto the Pup, is a cartoon character created in 1930 by Walt Disney Productions. He is a yellow orange-color, medium-sized, short-haired dog with black ears. Unlike most Disney characters, Pluto is not anthropomorphic beyond some characteristics such as facial expression, though he did speak for a short portion of his history. He is Mickey Mouse's pet. Officially a mixed-breed dog, he made his debut as a bloodhound in the Mickey Mouse cartoon The Chain Gang. Together with Mickey Mouse, Minnie Mouse, Donald Duck, Daisy Duck, and Goofy, Pluto is one of the "Sensational Six"—the biggest stars in the Disney universe. Though all six are non-human animals, Pluto alone is not dressed as a human.

Pluto debuted in animated cartoons and appeared in 24 Mickey Mouse films before receiving his own series in 1937. All together Pluto appeared in 89 short films between 1930 and 1953. Several of these were nominated for an Academy Award, including The Pointer (1939), Squatter's Rights (1946), Pluto's Blue Note (1947), and Mickey and the Seal (1948). One of his films, Lend a Paw (1941), won the award in 1942. Because Pluto does not speak, his films generally rely on physical humor. This made Pluto a pioneering figure in character animation, which is expressing personality through animation rather than dialogue.

Like all of Pluto's co-stars, the dog has appeared extensively in comics over the years, first making an appearance in 1931. He returned to theatrical animation in 1990 with The Prince and the Pauper and has also appeared in several direct-to-video films. Pluto also appears in the television series Mickey Mouse Works (1999–2000), House of Mouse (2001–2003), and Mickey Mouse Clubhouse (2006–2013).

In 1998, Disney's copyright on Pluto, set to expire in several years, was extended by the passage of the Sonny Bono Copyright Term Extension Act. Disney, along with other studios, lobbied for passage of the act to preserve their copyrights on characters such as Pluto for 20 additional years.

Pluto (manga)

is a Japanese manga series written and illustrated by Naoki Urasawa. It was serialized in Shogakukan's Big Comic Original magazine from 2003 to 2009, with the chapters collected into eight tankōbon volumes. The series is based on Osamu Tezuka's Astro Boy, specifically story arc, and named after the arc's chief villain. Urasawa reinterprets the story as a suspenseful murder mystery starring Gesicht, a Europol robot detective trying to solve the case of a string of robot and human deaths. Takashi Nagasaki is credited as the series' co-author. Macoto Tezuka, Osamu Tezuka's son, supervised the series, and Tezuka Productions is listed as having given cooperation.

Pluto was awarded the ninth Tezuka Osamu Cultural Prize, an Excellence Prize at the seventh Japan Media Arts Festival and the 2010 Seiun Award for Best Comic. In France, it won the Intergenerational Award at the Angoulême International Comics Festival and the Prix Asie-ACBD award at Japan Expo in 2011. The series was licensed and released in English in North America by Viz Media, under the name Pluto: Urasawa x Tezuka. By 2010, over 8.5 million volumes of the manga had been sold.

Pluto (EP)

Pluto is the debut EP by Norwegian rock band Seigmen. The EP came in three editions: a black CD limited to 500 copies, a clear CD, and a red CD.

Pluto (song)

"Pluto" is a song by Icelandic musician Björk. The song was written and produced by Björk and British producer Mark Bell for Björk's fourth studio album, Homogenic (1997).

Pluto (Canadian band)

Pluto was a Canadian alternative rock band from Vancouver, British Columbia. They were nominated for a 1997 Juno Award. The band consisted of vocalist and guitarist Ian Jones, guitarist Rolf Hetherington, bassist John Ounpuu and, drummer Justin Leigh.

Pluto (disambiguation)

Pluto is a dwarf planet in the solar system.

Pluto may also refer to:

Pluto (film)

Pluto is a 2012 South Korean film written and directed by Shin Su-won about the severity of competition among students at an elite high school, and how far one will go to be at the top.

The film made its world premiere at the 17th Busan International Film Festival and was also screened at the 63rd Berlin International Film Festival where director Shin Su-won received a special mention in the Generation 14plus Section.

Pluto (mythology)

Pluto (, ) was the ruler of the underworld in classical mythology. The earlier name for the god was Hades, which became more common as the name of the underworld itself. In ancient Greek religion and mythology, Pluto represents a more positive concept of the god who presides over the afterlife. Ploutōn was frequently conflated with Ploutos (Πλοῦτος, Plutus), a god of wealth, because mineral wealth was found underground, and because as a chthonic god Pluto ruled the deep earth that contained the seeds necessary for a bountiful harvest. The name Ploutōn came into widespread usage with the Eleusinian Mysteries, in which Pluto was venerated as a stern ruler but the loving husband of Persephone. The couple received souls in the afterlife, and are invoked together in religious inscriptions. Hades by contrast had few temples and religious practices associated with him, and is portrayed as the dark and violent abductor of Persephone.

Pluto and Hades differ in character, but they are not distinct figures and share their two major myths. In Greek cosmogony, the god received the rule of the underworld in a three-way division of sovereignty over the world, with his brothers Zeus ruling the Sky and Poseidon the Sea. His central narrative is the abduction of Persephone to be his wife and the queen of his realm. Plouton as the name of the ruler of the underworld first appears in Greek literature of the Classical period, in the works of the Athenian playwrights and of the philosopher Plato, who is the major Greek source on its significance. Under the name Pluto, the god appears in other myths in a secondary role, mostly as the possessor of a quest-object, and especially in the descent of Orpheus or other heroes to the underworld.

Plūtō (; genitive Plūtōnis) is the Latinized form of the Greek Plouton. Pluto's Roman equivalent is Dis Pater, whose name is most often taken to mean "Rich Father" and is perhaps a direct translation of Plouton. Pluto was also identified with the obscure Roman Orcus, like Hades the name of both a god of the underworld and the underworld as a place. The borrowed Greek name Pluto is sometimes used for the ruler of the dead in Latin literature, leading some mythology handbooks to assert misleadingly that Pluto was the Roman counterpart of Hades. Pluto (Pluton in French and German, Plutone in Italian) becomes the most common name for the classical ruler of the underworld in subsequent Western literature and other art forms.

Pluto (Future album)

Pluto is the debut studio album by American hip hop recording artist Future. It was released on April 13, 2012, by Epic Records ( Sony Music Entertainment), A-1 Recordings and his own Freebandz label. The album features guest appearances from Drake, T.I., Juicy J, Trae tha Truth, Big Rube, R. Kelly and Snoop Dogg, while the production on the album was handled by Will-A-Fool, Sonny Digital and K.E. on the Track, among others.

Pluto received generally positive reviews from critics. The album debuted at number 8 on the US Billboard 200 and sold 41,000 copies in its first week.

Usage examples of "pluto".

Pluto complained to Zeus, who eliminated Aesculapius with a thunderbolt.

Her eyen caste she full low adown, Where Pluto hath his darke regioun.

To the left Schalke-North with Wilhelmine-Victoria Mine, to the right Wanne without Eickel, past the Emscher marshes Gelsenkirchen stops, and here, which is where the branch line with its rusty rails and weeds was headed, there lies, silenced and half destroyed by bombs beneath an old-fashioned knock-kneed headfrarne, that Pluto Mine which has given Pluto, the black shepherd male, his name.

Halfway between Dortmund and Oberhausen Pluto shows what he has learned and not forgotten, but only repressed a little because of the troubled, masterless times.

At the moment, Pluto, Saturn, and Jupiter were all roughly lined up one side of the Sun, with Venus and Earth on the other sides of their orbits, only a few degrees away from the Sun.

It is not possible for us, at this stage of Plutonian national and industrial development, to assume the operation and servicing of vital life and community support systems, nor has the Planet Pluto Government the technical skills and facilities at this time to produce and deliver infrastructure and commodities essential for a self-sustaining economy.

Government of Planet Pluto hereby levies an inventory tax on all materials and products arriving in Plutonian territories from the UIPS.

The national interests of the Government of Planet Pluto demands compliance with Plutonian laws by all persons and properties within its jurisdiction.

Our response to the incidents off Planet Pluto is that we reject reprisal merely for vengeance, or for imposing ourselves on the Plutonian people.

Commanders -- those of the Plutonian fleet and those of our allies -that I have instructed you to take their oath of allegiance to me, Narval of Planet Pluto, and to none other.

I hereby declare Reen Narval persona non grata on Planet Pluto, and have instructed my warships to attack and destroy his vessel should he enter Plutonian jurisdiction.

From the Milky Way, according to Pythagoras, diverged the route to the dominions of Pluto.

Followed by Pluto, he lurches past the blurred pictures of the benefactors Asclepius, Sauerbruch, Paracelsus, and Virchow.

It was a planet far beyond the realm of the solar system-light-years away from the Sun, even farther than the small belt of rocky asteroidlike objects that orbited just beyond the planet Pluto.

With a circular swing of his wand, Mercury signaled a band of colleagues, dressed like Pluto, who sallied forth with little mallets and clubbed to death all who were still breathing.