{
  "id": "heat.thermal",
  "term": "heat",
  "sense": "thermal",
  "pos": "noun",
  "status": "review",
  "level": 20,
  "arena": "everyday",
  "domain": "everyday",
  "style": null,
  "definition": "when energy moves into matter, the matter becomes hot",
  "folk_gloss": null,
  "emergence": {
    "components": [
      "energy.capacity",
      "matter.substance",
      "become.change",
      "hot.temperature"
    ],
    "interaction": "energy capacity moves into matter substance, causing a change that results in higher temperature.",
    "novel_properties": [
      "increased thermal energy",
      "detectable temperature rise",
      "molecular motion increase"
    ]
  },
  "examples": [
    {
      "text": "The Sun heats Earth's surface to an average of 15°C by radiating energy absorbed by land and oceans.",
      "domain": "astronomy"
    },
    {
      "text": "A car engine reaches 90°C during operation as friction and combustion transfer energy to metal parts.",
      "domain": "engineering"
    },
    {
      "text": "Lava in Kīlauea volcano rose to 1,200°C after magma transferred thermal energy to surrounding rock.",
      "domain": "geology"
    }
  ],
  "relations": [
    {
      "id": "energy.capacity",
      "type": "is-a",
      "note": "heat is a form of energy"
    }
  ],
  "used_by": [
    "fire.combustion",
    "smith.metalwork",
    "summer.season"
  ],
  "forms": [
    "heat",
    "heated",
    "heating",
    "heats"
  ],
  "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": "components",
      "note": "components updated to reflect concepts actually leaned on by definition"
    }
  },
  "canonical": "https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-heat.thermal"
}