{
  "id": "rock.material",
  "term": "rock",
  "sense": "material",
  "pos": "noun",
  "status": "review",
  "level": 14,
  "arena": "common",
  "domain": "everyday",
  "style": null,
  "definition": "a portion of substance with a distinct boundary and a hard form",
  "folk_gloss": null,
  "emergence": {
    "components": [
      "matter.substance",
      "boundary.limit",
      "distinct.attribute",
      "form.shape",
      "hard.difficulty",
      "piece.portion",
      "portion.share",
      "substance.material"
    ],
    "interaction": "the substance and its boundary together maintain a fixed shape and resist deformation",
    "novel_properties": [
      "coherent solid body",
      "persistent individuality",
      "resistance to external force"
    ]
  },
  "examples": [
    {
      "text": "Mount Rushmore's granite facade eroded less than 2 millimeters since 1941 despite open-air exposure.",
      "domain": "geology"
    },
    {
      "text": "The Curiosity rover analyzed a basaltic rock named 'Jake Matijevic' on Mars in 2012.",
      "domain": "space exploration"
    },
    {
      "text": "The Rock of Gibraltar remained a strategic military outpost for British forces until 1981.",
      "domain": "institutions"
    }
  ],
  "relations": [
    {
      "id": "substance.material",
      "type": "is-a",
      "note": "rock is a type of material"
    },
    {
      "id": "physical.material",
      "type": "is-a",
      "note": "rock is physical matter"
    }
  ],
  "used_by": [],
  "forms": [
    "rock",
    "rocked",
    "rocking",
    "rocks"
  ],
  "closed": true,
  "provenance": {
    "author": "openrouter:openai/gpt-oss-120b",
    "date": "2026-07-29",
    "confidence": 0.6,
    "reconciled": {
      "by": "openrouter:qwen/qwen3-235b-a22b-2507",
      "date": "2026-07-31",
      "changed": "factual",
      "note": "Definition was factually incorrect—omitted 'portion.share' and 'substance.material' which are essential. Added them to components. The original definition inadvertently excluded key constituting conce"
    }
  },
  "canonical": "https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-rock.material"
}