igneous

/ˈɪɡniəs/ (bre, ipa) · /ˈɪɡniəs/ (ame, ipa) · /ˈig-nē-əs/ (ame, mw)

igneous — adjective

  • igneouspositive
  • more igneouscomparative
  • most igneoussuperlative

1. describing rock that formed when hot melted material from deep inside the earth

1.形容詞C2
釋義

describing rock that formed when hot melted material from deep inside the earth cooled and became solid — for example, basalt or granite.

例句

Granite is an igneous rock that often appears in the cliffs around Constanza's coastal village.

attributive: igneous + rock

Lakshmi's geology teacher passed around small pieces of igneous rock from an Icelandic volcano.

collocation: pieces of igneous rock

同義詞
  • volcanic

    narrower — refers to igneous rock formed at or near the surface (e.g. basalt); 'igneous' covers both surface and deep-formed rocks

  • magmatic

    technical synonym used in research papers; rarely seen in everyday or learner contexts

反義詞
  • sedimentary

    rock formed from layers of settled sand, mud, or shells, not from cooled magma

  • metamorphic

    rock changed by heat or pressure after it first formed; the original rock could have been any type

文法句型

igneous + rock/intrusion/formation

be igneous

用法筆記

Almost always pairs with 'rock', 'formation', 'intrusion', or a specific rock name (basalt, granite). Contrasts with sedimentary (formed from settled particles) and metamorphic (changed by heat and pressure) — the three main rock categories in geology.

常見錯誤

❌The fire made the wood igneous.
✅Igneous' only describes rock formed from cooled magma or lava, not anything heated or burned.