"blood quantum" meaning in English

{
  "forms": [
    {
      "form": "blood quantums",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "blood quanta",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "s",
        "2": "blood quanta"
      },
      "expansion": "blood quantum (plural blood quantums or blood quanta)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The fraction of a person's ancestors, out of their total ancestors, who are documented as full-blooded Native Americans. For instance, a person who has one parent who is a full-blood Native American and one who has no Native ancestry has a blood quantum of 1/2."
      ],
      "id": "en-blood_quantum-en-noun-xj-zFYeN",
      "links": [
        [
          "fraction",
          "fraction"
        ],
        [
          "ancestor",
          "ancestor"
        ],
        [
          "full-blooded",
          "full-blooded"
        ],
        [
          "Native American",
          "Native American"
        ],
        [
          "parent",
          "parent"
        ]
      ],
      "raw_glosses": [
        "(US) The fraction of a person's ancestors, out of their total ancestors, who are documented as full-blooded Native Americans. For instance, a person who has one parent who is a full-blood Native American and one who has no Native ancestry has a blood quantum of 1/2."
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "word": "blood quantum"
}

{
  "forms": [
    {
      "form": "blood quantums",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "blood quanta",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "s",
        "2": "blood quanta"
      },
      "expansion": "blood quantum (plural blood quantums or blood quanta)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "American English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns"
      ],
      "glosses": [
        "The fraction of a person's ancestors, out of their total ancestors, who are documented as full-blooded Native Americans. For instance, a person who has one parent who is a full-blood Native American and one who has no Native ancestry has a blood quantum of 1/2."
      ],
      "links": [
        [
          "fraction",
          "fraction"
        ],
        [
          "ancestor",
          "ancestor"
        ],
        [
          "full-blooded",
          "full-blooded"
        ],
        [
          "Native American",
          "Native American"
        ],
        [
          "parent",
          "parent"
        ]
      ],
      "raw_glosses": [
        "(US) The fraction of a person's ancestors, out of their total ancestors, who are documented as full-blooded Native Americans. For instance, a person who has one parent who is a full-blood Native American and one who has no Native ancestry has a blood quantum of 1/2."
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "word": "blood quantum"
}