"so long, and thanks for all the fish" meaning in All languages combined

{
  "etymology_text": "From the title of a 1984 comic novel by Douglas Adams, in which it is the last message left by dolphins for humankind before escaping a doomed Earth.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "so long, and thanks for all the fish",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "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 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2007, Zac Woodall, The Rational Guide to Microsoft Office Access 2007 Templates, Mann Publishing Group, →ISBN, page 247:",
          "text": "[…] Templates” badge, which you can request by mailing a self-addressed stamped envelope filled with 100 dollar bills to me directly. Please allow 52-104 weeks for processing and delivery. That's all there is. So long and thanks for all the fish.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Goodbye, farewell."
      ],
      "id": "en-so_long,_and_thanks_for_all_the_fish-en-phrase-Zaeb94I0",
      "links": [
        [
          "humorous",
          "humorous"
        ],
        [
          "Goodbye",
          "goodbye"
        ],
        [
          "farewell",
          "farewell"
        ]
      ],
      "raw_glosses": [
        "(humorous) Goodbye, farewell."
      ],
      "tags": [
        "humorous"
      ],
      "wikipedia": [
        "Douglas Adams"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "LL-Q1860 (eng)-Vealhurl-so long, and thanks for all the fish.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/a/aa/LL-Q1860_%28eng%29-Vealhurl-so_long%2C_and_thanks_for_all_the_fish.wav/LL-Q1860_%28eng%29-Vealhurl-so_long%2C_and_thanks_for_all_the_fish.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/a/aa/LL-Q1860_%28eng%29-Vealhurl-so_long%2C_and_thanks_for_all_the_fish.wav/LL-Q1860_%28eng%29-Vealhurl-so_long%2C_and_thanks_for_all_the_fish.wav.ogg"
    }
  ],
  "word": "so long, and thanks for all the fish"
}

{
  "etymology_text": "From the title of a 1984 comic novel by Douglas Adams, in which it is the last message left by dolphins for humankind before escaping a doomed Earth.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "so long, and thanks for all the fish",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English humorous terms",
        "English lemmas",
        "English multiword terms",
        "English phrases",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2007, Zac Woodall, The Rational Guide to Microsoft Office Access 2007 Templates, Mann Publishing Group, →ISBN, page 247:",
          "text": "[…] Templates” badge, which you can request by mailing a self-addressed stamped envelope filled with 100 dollar bills to me directly. Please allow 52-104 weeks for processing and delivery. That's all there is. So long and thanks for all the fish.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Goodbye, farewell."
      ],
      "links": [
        [
          "humorous",
          "humorous"
        ],
        [
          "Goodbye",
          "goodbye"
        ],
        [
          "farewell",
          "farewell"
        ]
      ],
      "raw_glosses": [
        "(humorous) Goodbye, farewell."
      ],
      "tags": [
        "humorous"
      ],
      "wikipedia": [
        "Douglas Adams"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "LL-Q1860 (eng)-Vealhurl-so long, and thanks for all the fish.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/a/aa/LL-Q1860_%28eng%29-Vealhurl-so_long%2C_and_thanks_for_all_the_fish.wav/LL-Q1860_%28eng%29-Vealhurl-so_long%2C_and_thanks_for_all_the_fish.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/a/aa/LL-Q1860_%28eng%29-Vealhurl-so_long%2C_and_thanks_for_all_the_fish.wav/LL-Q1860_%28eng%29-Vealhurl-so_long%2C_and_thanks_for_all_the_fish.wav.ogg"
    }
  ],
  "word": "so long, and thanks for all the fish"
}