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单词 pitchstone
释义

Definition of pitchstone in English:

pitchstone

noun ˈpɪtʃstəʊnˈpiCHˌstōn
mass nounGeology
  • A dull vitreous rock resembling hardened pitch, formed by weathering of obsidian.

    〔地质〕松脂石

    Example sentencesExamples
    • Also found was a flake of green Arran pitchstone, thought to be a waste fragment from the manufacture of a tool.
    • This feature was once described as ‘the finest ‘small’ mountain feature in the British Isles ’, and is in reality an east-west ridge of volcanic rock which appears as a narrow upthrust of columnar pitchstone when seen from the south or east.
    • Similarly, Arran pitchstone has turned up in Ireland and Orkney, highlighting the complex exchange networks between these places.

Definition of pitchstone in US English:

pitchstone

nounˈpiCHˌstōn
Geology
  • A dull vitreous rock resembling hardened pitch, formed by weathering of obsidian.

    〔地质〕松脂石

    Example sentencesExamples
    • This feature was once described as ‘the finest ‘small’ mountain feature in the British Isles ’, and is in reality an east-west ridge of volcanic rock which appears as a narrow upthrust of columnar pitchstone when seen from the south or east.
    • Similarly, Arran pitchstone has turned up in Ireland and Orkney, highlighting the complex exchange networks between these places.
    • Also found was a flake of green Arran pitchstone, thought to be a waste fragment from the manufacture of a tool.
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更新时间:2025/8/4 20:18:17