Word.ws English Dictionary

plutonic

Syllables: plu·ton·icUK/pluːˈtɒnɪk//pluˈtɑnɪk/

plutonic is the alternative letter-case form of Plutonic.

Adjective (1)

plutonic (not comparable)

  1. Containing plutonium in a higher oxidation state.

Adjective (2) capitalized: Plutonic

Plutonic (comparative more Plutonic, superlative most Plutonic)

  1. (Greek, Roman) Synonym of Plutonian (“of or relating to Pluto, the Greek and Roman god of the underworld; demonic, infernal”).
  2. (broadly) Synonym of Plutonian (“of, relating to, or having characteristics associated with the underworld; dark, gloomy; mournful”).
    • a dark, handsome lady, of no little majesty, and rather like a plutonic Madonna1911, G. K. Chesterton, “The Sins of Prince Saradine”, in The Innocence of Father Brown
  3. (broadly) Of or pertaining to rocks formed deep in the Earth's crust, rather than by volcanoes at the surface of the Earth.
    • These cliffs, I may remark, are basaltic, and therefore plutonic.1912, Arthur Conan Doyle, The Lost World […], London; New York, N.Y.: Hodder and Stoughton, →OCLC
  4. (broadly, historical) Of, pertaining to, or supporting plutonism (“the theory that the rocks of the Earth were formed in fire by volcanic activity, with a continuing gradual process of weathering and erosion, then deposited on the sea bed, re-formed into layers of sedimentary rock by heat and pressure, and raised again”).
    Synonyms:
    Plutonian

Synonyms of plutonic

30 more synonymsFewer synonyms

Forms of plutonic

comparativemore plutonic
superlativemost plutonic
comparativemore Plutonic
superlativemost Plutonic
alternative formplutonic

Origin of plutonic

See Plutonic.

From pluton(ium) + -ic.

From Ancient Greek Πλούτων (Ploútōn, “Pluto, Greek and Roman god of the underworld”) (from πλοῦτος (ploûtos, “riches, wealth”) (ultimately from Proto-Indo-European *plew- (“to fly; to flow; to run”)) + -ων (-ōn)) + -ic (suffix forming adjectives meaning ‘of or pertaining to’). The English word is cognate with Middle French plutonique (modern French plutonique (“of or pertaining to Pluto, the underworld, or the interior of the Earth”)).

Words formed from plutonic

Questions about plutonic

What does plutonic mean?
Plutonic means containing plutonium in a higher oxidation state.
What is plutonic the alternative letter-case form of?
Plutonic is the alternative letter-case form of Plutonic.
What part of speech is plutonic?
Plutonic is an adjective.
How do you pronounce plutonic?
Plutonic is pronounced /pluːˈtɒnɪk/ (UK).

Words near plutonic in the dictionary

  1. pluton
  2. plutonate
  3. plutonates
  4. Plutonian
  5. Plutonians
  6. plutonic
  7. plutoniclastic
  8. plutonics
  9. plutoniferous
  10. plutonism
  11. plutonisms

Source and license

Adapted from Wiktionary: plutonic (page history and authors); Plutonic (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-Plutonic.wav.

Cite this entry: “plutonic.” Word.ws, https://word.ws/plutonic. Based on Wiktionary, CC BY-SA 4.0.