"ultraweak" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ultra",
        "3": "weak"
      },
      "expansion": "ultra- + weak",
      "name": "prefix"
    }
  ],
  "etymology_text": "ultra- + weak",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "ultraweak (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "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 ultra-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Physics",
          "orig": "en:Physics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Extremely weak"
      ],
      "id": "en-ultraweak-en-adj-lgP3ACS7",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "physics",
          "physics"
        ],
        [
          "weak",
          "weak"
        ]
      ],
      "raw_glosses": [
        "(mathematics, physics) Extremely weak"
      ],
      "related": [
        {
          "word": "ultraweakly"
        }
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "physics",
        "sciences"
      ],
      "wikipedia": [
        "Ultraweak topology"
      ]
    }
  ],
  "word": "ultraweak"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ultra",
        "3": "weak"
      },
      "expansion": "ultra- + weak",
      "name": "prefix"
    }
  ],
  "etymology_text": "ultra- + weak",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "ultraweak (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "word": "ultraweakly"
    }
  ],
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms prefixed with ultra-",
        "English uncomparable adjectives",
        "en:Mathematics",
        "en:Physics"
      ],
      "glosses": [
        "Extremely weak"
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "physics",
          "physics"
        ],
        [
          "weak",
          "weak"
        ]
      ],
      "raw_glosses": [
        "(mathematics, physics) Extremely weak"
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "physics",
        "sciences"
      ],
      "wikipedia": [
        "Ultraweak topology"
      ]
    }
  ],
  "word": "ultraweak"
}