{
  "id": "half.ratio",
  "term": "half",
  "sense": "ratio",
  "pos": "noun",
  "status": "review",
  "level": 4,
  "arena": "EmergenceLexicon",
  "domain": "Everyday language",
  "style": null,
  "definition": "a part of something that is just as large as another part of the same thing",
  "folk_gloss": null,
  "emergence": {
    "components": [
      "part.relation",
      "large.size",
      "just.exact"
    ],
    "interaction": "the part relation together with the large size pattern and exact equivalence creates an equal division of a thing",
    "novel_properties": [
      "equal division",
      "reciprocal size",
      "comparative parity"
    ]
  },
  "examples": [
    {
      "text": "The Moon's near side always faces Earth due to tidal locking from gravitational forces over millennia.",
      "domain": "astronomy"
    },
    {
      "text": "In 2020, lithium-ion batteries in Tesla Model S vehicles retained half their original capacity after 200,000 miles.",
      "domain": "engineering"
    },
    {
      "text": "By 2019, exactly half of Iceland's national internet traffic routed through the RE-IS data center in Reykjavik.",
      "domain": "computing"
    }
  ],
  "relations": [
    {
      "id": "part.relation",
      "note": "is-a",
      "type": "is-a"
    }
  ],
  "used_by": [],
  "forms": [
    "half",
    "halved",
    "halves",
    "halving"
  ],
  "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": "Added 'just.exact' as it is essential to the meaning of 'half' as an equal part. Definition remains accurate and concise."
    }
  },
  "canonical": "https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-half.ratio"
}