"vattu-" meaning in Swedish

{
  "etymology_templates": [
    {
      "args": {
        "1": "sv",
        "2": "vatten",
        "3": "-u-"
      },
      "expansion": "vatten + -u-",
      "name": "af"
    }
  ],
  "etymology_text": "An archaic form of vatten (“water”) still used in certain compounds, from vatten + -u-.",
  "head_templates": [
    {
      "args": {
        "1": "sv",
        "2": "prefix"
      },
      "expansion": "vattu-",
      "name": "head"
    }
  ],
  "lang": "Swedish",
  "lang_code": "sv",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Swedish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Swedish terms interfixed with -u-",
          "parents": [],
          "source": "w"
        }
      ],
      "derived": [
        {
          "english": "algal bloom",
          "word": "vattublom"
        },
        {
          "english": "an Aquarius",
          "word": "vattuman"
        },
        {
          "english": "Aquarius",
          "word": "Vattumannen"
        },
        {
          "word": "vattuminskning"
        },
        {
          "english": "water nymph",
          "word": "vattunymph"
        },
        {
          "english": "hydrophobia; rabies",
          "word": "vattuskräck"
        },
        {
          "english": "hydropsy; edema",
          "word": "vattusot"
        }
      ],
      "glosses": [
        "related to water"
      ],
      "id": "en-vattu--sv-prefix-iQgK6GtZ",
      "links": [
        [
          "water",
          "water"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "vattu-"
}

{
  "derived": [
    {
      "english": "algal bloom",
      "word": "vattublom"
    },
    {
      "english": "an Aquarius",
      "word": "vattuman"
    },
    {
      "english": "Aquarius",
      "word": "Vattumannen"
    },
    {
      "word": "vattuminskning"
    },
    {
      "english": "water nymph",
      "word": "vattunymph"
    },
    {
      "english": "hydrophobia; rabies",
      "word": "vattuskräck"
    },
    {
      "english": "hydropsy; edema",
      "word": "vattusot"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "sv",
        "2": "vatten",
        "3": "-u-"
      },
      "expansion": "vatten + -u-",
      "name": "af"
    }
  ],
  "etymology_text": "An archaic form of vatten (“water”) still used in certain compounds, from vatten + -u-.",
  "head_templates": [
    {
      "args": {
        "1": "sv",
        "2": "prefix"
      },
      "expansion": "vattu-",
      "name": "head"
    }
  ],
  "lang": "Swedish",
  "lang_code": "sv",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        "Swedish entries with incorrect language header",
        "Swedish lemmas",
        "Swedish prefixes",
        "Swedish terms interfixed with -u-"
      ],
      "glosses": [
        "related to water"
      ],
      "links": [
        [
          "water",
          "water"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "vattu-"
}