Pluto Definition

plo͝otō
noun
The god ruling over the lower world.
Webster's New World
A large dwarf planet orbiting beyond Neptune: diameter, c. 2,270 km (c. 1,410 mi); period of revolution, c. 248.59 earth years; period of rotation (retrograde), 6.39 earth days; three satellites; symbol, ♇: formerly classified as the ninth major planet.
Webster's New World
The god of the dead and the ruler of the underworld, identified with the Greek Hades.
American Heritage
Synonyms:
  • aidoneus
  • hades
  • aides
pronoun

(astronomy) Originally known as the ninth planet but reclassified in 2006 as a dwarf planet, the brightest and first known Kuiper belt object, represented by the symbol ♇ in astronomy and in astrology.

Wiktionary

(Greek mythology, Roman mythology) Greco-Roman god of the underworld.

Wiktionary
verb

(neologism) To demote or devalue something.

Wiktionary
prefix

Forming compound words relating to wealth or money.

Wiktionary

Origin of Pluto

  • Latin Plūtō Plūtōn- from Greek Ploutōn from ploutos wealth (from the belief that the underworld was the source of wealth from the ground) pleu- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • Originally coined in 2006 by the American Dialect Society, defeating climate canary. Was believed by many to be a self-promotion attempt.

    From Wiktionary

  • From combining form of Ancient Greek πλοῦτος (ploutos, “wealth, riches”).

    From Wiktionary

  • Ancient Greek Πλούτων (Plutōn)

    From Wiktionary

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