"in perpetuity" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "in perpetuity",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "in perpetuity",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        {
          "_dis": "100 0",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w+disamb"
        },
        {
          "_dis": "100 0",
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
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          "source": "w+disamb"
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          "_dis": "100 0",
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            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
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          "source": "w+disamb"
        },
        {
          "_dis": "100 0",
          "kind": "topical",
          "langcode": "en",
          "name": "Time",
          "orig": "en:Time",
          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "bequeathed to the nation in perpetuity"
        },
        {
          "text": "The interest payments on consols were in perpetuity."
        }
      ],
      "glosses": [
        "For an indefinitely long time"
      ],
      "id": "en-in_perpetuity-en-prep_phrase-Sc2qKAk7"
    },
    {
      "examples": [
        {
          "text": "desire happiness in perpetuity"
        },
        {
          "text": "the annuity was in perpetuity"
        }
      ],
      "glosses": [
        "For life"
      ],
      "id": "en-in_perpetuity-en-prep_phrase-DZxNVN2E"
    }
  ],
  "word": "in perpetuity"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English entries with topic categories using raw markup",
    "English lemmas",
    "English multiword terms",
    "English prepositional phrases",
    "English terms with non-redundant non-automated sortkeys",
    "en:Time"
  ],
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "in perpetuity",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "in perpetuity",
      "name": "en-PP"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "examples": [
        {
          "text": "bequeathed to the nation in perpetuity"
        },
        {
          "text": "The interest payments on consols were in perpetuity."
        }
      ],
      "glosses": [
        "For an indefinitely long time"
      ]
    },
    {
      "examples": [
        {
          "text": "desire happiness in perpetuity"
        },
        {
          "text": "the annuity was in perpetuity"
        }
      ],
      "glosses": [
        "For life"
      ]
    }
  ],
  "word": "in perpetuity"
}