"metric inch" meaning in English

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  "etymology_text": "From being measured in SI metric measurement (2.5 cm), as a value similar to the size of a US/UK Imperial Standard International Inch (2.54 cm), used in some measurements.",
  "forms": [
    {
      "form": "metric inches",
      "tags": [
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      "expansion": "metric inch (plural metric inches)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "coordinate_terms": [
        {
          "word": "metric acre"
        },
        {
          "word": "metric foot"
        },
        {
          "word": "metric mile"
        },
        {
          "word": "metric yard"
        }
      ],
      "glosses": [
        "A unit measure equivalent to 2.5 centimeters or 25 millimetres; 1/12 of a metric foot (“30 cm”)"
      ],
      "id": "en-metric_inch-en-noun-gGkoAMLg",
      "links": [
        [
          "metric foot",
          "metric foot#English"
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      ],
      "related": [
        {
          "word": "American inch"
        },
        {
          "word": "British inch"
        },
        {
          "word": "decimal inch"
        },
        {
          "word": "English inch"
        },
        {
          "word": "fractional inch"
        },
        {
          "word": "French inch"
        },
        {
          "word": "Imperial inch"
        },
        {
          "word": "international inch"
        },
        {
          "word": "Paris inch"
        },
        {
          "word": "standard inch"
        },
        {
          "word": "traditional inch"
        },
        {
          "word": "Vienna inch"
        }
      ]
    }
  ],
  "word": "metric inch"
}

{
  "coordinate_terms": [
    {
      "word": "metric acre"
    },
    {
      "word": "metric foot"
    },
    {
      "word": "metric mile"
    },
    {
      "word": "metric yard"
    }
  ],
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  "etymology_text": "From being measured in SI metric measurement (2.5 cm), as a value similar to the size of a US/UK Imperial Standard International Inch (2.54 cm), used in some measurements.",
  "forms": [
    {
      "form": "metric inches",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "metric inch (plural metric inches)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "American inch"
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    {
      "word": "British inch"
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    {
      "word": "decimal inch"
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      "word": "English inch"
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    {
      "word": "fractional inch"
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      "word": "French inch"
    },
    {
      "word": "Imperial inch"
    },
    {
      "word": "international inch"
    },
    {
      "word": "Paris inch"
    },
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      "word": "standard inch"
    },
    {
      "word": "traditional inch"
    },
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      "word": "Vienna inch"
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      "glosses": [
        "A unit measure equivalent to 2.5 centimeters or 25 millimetres; 1/12 of a metric foot (“30 cm”)"
      ],
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          "metric foot",
          "metric foot#English"
        ]
      ]
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  ],
  "word": "metric inch"
}