plutonic

plutonic — adjective

  • plutonicpositive
  • more plutoniccomparative
  • most plutonicsuperlative

1. describes a type of rock that forms when hot liquid magma cools and hardens far

1.形容詞C1
釋義

describes a type of rock that forms when hot liquid magma cools and hardens far below the ground surface, creating a coarse-grained texture

例句

The granite in the old quarry is plutonic, having cooled underground for millions of years.

used for igneous rock that cooled underground

Dr. Okafor explained how plutonic rocks like gabbro form deep beneath the earth's crust.

plutonic + noun (rocks, granite, deposit)

同義詞
  • intrusive

    Geology term for igneous rock that pushes into existing rock layers; 'plutonic' specifies deep underground formation

  • igneous

    A broader category that includes both plutonic (deep underground) and volcanic (surface) rock types

反義詞
  • volcanic

    Describes rock formed from lava on the earth's surface rather than magma deep underground

  • extrusive

    Geology term for igneous rock that cools on the surface; the opposite of intrusive/plutonic

文法句型

plutonic + noun (rock, granite, deposit)

用法筆記

Frequently encountered in geology textbooks rather than everyday conversation. The noun it modifies (rock, granite, intrusion) tells the reader which meaning applies — the geological sense is far more common than the mythological one.

常見錯誤

❌The lava flow created new plutonic rock.
✅The magma chamber cooled slowly to form plutonic rock.
💡Plutonic rocks form underground from magma; lava cools on the surface and creates volcanic rock, not plutonic rock.

2. relating to the ancient god Pluto or the dark world of the dead beneath the eart

2.形容詞C2
釋義

relating to the ancient god Pluto or the dark world of the dead beneath the earth in classical mythology — for example, describing the rivers, gates, or shadows of Hades

例句

In Greek myths, the plutonic realm of Hades was hidden deep beneath the living world.

plutonic realm (the underworld in mythology)

The poet called the river Styx a plutonic gateway to the land of the dead.

同義詞
  • Plutonian

    A more common adjective for 'relating to the underworld'; 'plutonic' is the rarer variant

  • underworld

    Used as an attributive noun (e.g., 'underworld river'); plainer but more frequent in modern English

  • infernal

    Suggests hellish, fire-related imagery; broader and more common in religious contexts

反義詞
  • celestial

    Relating to the heavens or sky, as opposed to the underworld beneath the earth

  • Olympian

    Relating to the gods of Mount Olympus, who lived above the earth rather than below it

文法句型

plutonic + noun (realm, darkness, gate)

用法筆記

Appears almost exclusively in literary or mythological contexts. 'Plutonian' is a more common alternative for this sense. Distinguish from sense 1 (IGNEOUS ROCK), where the word describes mineral formation, not the underworld.

常見錯誤

❌Scientists studied the plutonic soil on Pluto for signs of life.
✅Scientists studied the plutonic rock beneath the mountain for signs of mineral deposits.
💡The word 'plutonic' is not related to the dwarf planet Pluto; it refers to the god Pluto or to underground rock formation.