{
  "id": "drug.chemical",
  "term": "drug",
  "sense": "chemical",
  "pos": "noun",
  "status": "review",
  "level": 13,
  "arena": "drug",
  "domain": "everyday",
  "style": null,
  "definition": "a substance that when taken causes a change in a body's condition",
  "folk_gloss": null,
  "emergence": {
    "components": [
      "substance.material",
      "change.process",
      "body.physical",
      "cause.reason",
      "condition.state",
      "take.acquisition"
    ],
    "interaction": "when a substance is taken and causes a change in a body's condition, the drug emerges",
    "novel_properties": [
      "bodily effect",
      "causal agency",
      "altered state"
    ]
  },
  "examples": [
    {
      "text": "Aspirin taken during a fever reduces inflammation and body temperature in humans.",
      "domain": "biology"
    },
    {
      "text": "The Apollo 13 crew used lithium hydroxide canisters to remove CO₂ and prevent toxic buildup.",
      "domain": "engineering"
    },
    {
      "text": "Methadone clinics in Vancouver dispense doses daily to stabilize opioid-dependent patients.",
      "domain": "institutions"
    }
  ],
  "relations": [
    {
      "id": "substance.material",
      "note": "is-a",
      "type": "is-a"
    },
    {
      "id": "state.condition",
      "note": "enables",
      "type": "enables"
    }
  ],
  "used_by": [
    "medicine.medical"
  ],
  "forms": [
    "drug",
    "drugged",
    "drugging",
    "drugs"
  ],
  "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": "Missing components added; interaction updated to reflect full causal chain."
    }
  },
  "canonical": "https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-drug.chemical"
}