"mega-" meaning in Translingual

{
  "etymology_templates": [
    {
      "args": {
        "1": "mul",
        "2": "grc",
        "3": "μέγας",
        "4": "",
        "5": "great, large, mighty"
      },
      "expansion": "Ancient Greek μέγας (mégas, “great, large, mighty”)",
      "name": "der"
    }
  ],
  "etymology_text": "From Ancient Greek μέγας (mégas, “great, large, mighty”).",
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "prefix"
      },
      "expansion": "mega-",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Translingual entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Used with taxon names to form other taxon names, usually for a morphologically similar taxon differing only in size"
      ],
      "id": "en-mega--mul-prefix-yC0qaq7x",
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "mega-"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "mul",
        "2": "grc",
        "3": "μέγας",
        "4": "",
        "5": "great, large, mighty"
      },
      "expansion": "Ancient Greek μέγας (mégas, “great, large, mighty”)",
      "name": "der"
    }
  ],
  "etymology_text": "From Ancient Greek μέγας (mégas, “great, large, mighty”).",
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "prefix"
      },
      "expansion": "mega-",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        "Translingual entries with incorrect language header",
        "Translingual lemmas",
        "Translingual prefixes",
        "Translingual terms derived from Ancient Greek"
      ],
      "glosses": [
        "Used with taxon names to form other taxon names, usually for a morphologically similar taxon differing only in size"
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "mega-"
}