"microweight" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "micro",
        "3": "weight"
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      "expansion": "micro- + weight",
      "name": "prefix"
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  ],
  "etymology_text": "micro- + weight",
  "head_templates": [
    {
      "args": {
        "1": "-"
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      "expansion": "microweight (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with micro-",
          "parents": [],
          "source": "w"
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      ],
      "glosses": [
        "A weight class in mixed martial arts, below 45 kg"
      ],
      "id": "en-microweight-en-noun-0C3bD6rE",
      "links": [
        [
          "weight class",
          "weight class"
        ],
        [
          "mixed martial arts",
          "mixed martial arts"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "microweight"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "micro",
        "3": "weight"
      },
      "expansion": "micro- + weight",
      "name": "prefix"
    }
  ],
  "etymology_text": "micro- + weight",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "microweight (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with micro-",
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      ],
      "glosses": [
        "A weight class in mixed martial arts, below 45 kg"
      ],
      "links": [
        [
          "weight class",
          "weight class"
        ],
        [
          "mixed martial arts",
          "mixed martial arts"
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      "tags": [
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  ],
  "word": "microweight"
}