"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"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "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 uncomparable adverbs",
        "Pages with 2 entries"
      ],
      "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"
}