"masterdom" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "master",
        "3": "dom"
      },
      "expansion": "master + -dom",
      "name": "suffix"
    }
  ],
  "etymology_text": "From master + -dom.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "masterdom (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -dom",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Dominion; rule, supremacy."
      ],
      "id": "en-masterdom-en-noun-0cavqW2t",
      "links": [
        [
          "Dominion",
          "dominion"
        ],
        [
          "rule",
          "rule"
        ],
        [
          "supremacy",
          "supremacy"
        ]
      ],
      "raw_glosses": [
        "(now rare) Dominion; rule, supremacy."
      ],
      "tags": [
        "archaic",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈmɑːstədəm/",
      "tags": [
        "UK"
      ]
    },
    {
      "ipa": "/ˈmæstɚdəm/",
      "tags": [
        "General-American"
      ]
    }
  ],
  "word": "masterdom"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "master",
        "3": "dom"
      },
      "expansion": "master + -dom",
      "name": "suffix"
    }
  ],
  "etymology_text": "From master + -dom.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "masterdom (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English 3-syllable words",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms suffixed with -dom",
        "English terms with IPA pronunciation",
        "English terms with rare senses",
        "English uncountable nouns"
      ],
      "glosses": [
        "Dominion; rule, supremacy."
      ],
      "links": [
        [
          "Dominion",
          "dominion"
        ],
        [
          "rule",
          "rule"
        ],
        [
          "supremacy",
          "supremacy"
        ]
      ],
      "raw_glosses": [
        "(now rare) Dominion; rule, supremacy."
      ],
      "tags": [
        "archaic",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈmɑːstədəm/",
      "tags": [
        "UK"
      ]
    },
    {
      "ipa": "/ˈmæstɚdəm/",
      "tags": [
        "General-American"
      ]
    }
  ],
  "word": "masterdom"
}