"prealphabet" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "pre",
        "3": "alphabet"
      },
      "expansion": "pre- + alphabet",
      "name": "prefix"
    }
  ],
  "etymology_text": "pre- + alphabet",
  "forms": [
    {
      "form": "prealphabets",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "prealphabet (plural prealphabets)",
      "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 prefixed with pre-",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2018, Bob Yareham, English Actually",
          "text": "Our own dearly beloved Anglo Saxons used a very basic prealphabet consisting of 'runes' (straight lines scratched onto wood, bone or stone) called, rather quaintly I think, 'futhorc.'",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A writing system that was used before an alphabet, or later developed into an alphabet."
      ],
      "id": "en-prealphabet-en-noun-nHTC-bbz",
      "links": [
        [
          "writing system",
          "writing system"
        ]
      ]
    }
  ],
  "word": "prealphabet"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "pre",
        "3": "alphabet"
      },
      "expansion": "pre- + alphabet",
      "name": "prefix"
    }
  ],
  "etymology_text": "pre- + alphabet",
  "forms": [
    {
      "form": "prealphabets",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "prealphabet (plural prealphabets)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with pre-",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "2018, Bob Yareham, English Actually",
          "text": "Our own dearly beloved Anglo Saxons used a very basic prealphabet consisting of 'runes' (straight lines scratched onto wood, bone or stone) called, rather quaintly I think, 'futhorc.'",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A writing system that was used before an alphabet, or later developed into an alphabet."
      ],
      "links": [
        [
          "writing system",
          "writing system"
        ]
      ]
    }
  ],
  "word": "prealphabet"
}