"ab aeterno" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "NL.",
        "3": "ab aeternō"
      },
      "expansion": "New Latin ab aeternō",
      "name": "bor"
    }
  ],
  "etymology_text": "Borrowed from New Latin ab aeternō.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "ab aeterno (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "From time immemorial; from an infinitely remote point in the past."
      ],
      "id": "en-ab_aeterno-en-adv-UJJKX8U2",
      "links": [
        [
          "time immemorial",
          "time immemorial"
        ],
        [
          "past",
          "past"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌæb iˈtɚ.noʊ/",
      "tags": [
        "General-American"
      ]
    },
    {
      "ipa": "/ˌɑb ˌaɪˈtɚ.noʊ/",
      "tags": [
        "General-American"
      ]
    }
  ],
  "word": "ab aeterno"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "NL.",
        "3": "ab aeternō"
      },
      "expansion": "New Latin ab aeternō",
      "name": "bor"
    }
  ],
  "etymology_text": "Borrowed from New Latin ab aeternō.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "ab aeterno (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "English adverbs",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English terms borrowed from New Latin",
        "English terms derived from New Latin",
        "English terms with IPA pronunciation",
        "English uncomparable adverbs"
      ],
      "glosses": [
        "From time immemorial; from an infinitely remote point in the past."
      ],
      "links": [
        [
          "time immemorial",
          "time immemorial"
        ],
        [
          "past",
          "past"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌæb iˈtɚ.noʊ/",
      "tags": [
        "General-American"
      ]
    },
    {
      "ipa": "/ˌɑb ˌaɪˈtɚ.noʊ/",
      "tags": [
        "General-American"
      ]
    }
  ],
  "word": "ab aeterno"
}