"S.I." meaning in French

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "Système international"
      },
      "expansion": "Abbreviation of Système international",
      "name": "abbrev"
    },
    {
      "args": {
        "1": "<i class=\"Latn mention\" lang=\"fr\">Système international d’unités</i>"
      },
      "expansion": "(Système international d’unités)",
      "name": "gloss"
    }
  ],
  "etymology_text": "Abbreviation of Système international (Système international d’unités).",
  "forms": [
    {
      "form": "S. I.",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "S.I. m",
      "name": "fr-proper noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "S.I.; Synonym of SI (International System of Units)"
      ],
      "id": "en-S.I.-fr-name-UTI-sKCp",
      "links": [
        [
          "S.I.",
          "S.I.#English"
        ],
        [
          "SI",
          "SI#Translingual"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "S.I."
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "Système international"
      },
      "expansion": "Abbreviation of Système international",
      "name": "abbrev"
    },
    {
      "args": {
        "1": "<i class=\"Latn mention\" lang=\"fr\">Système international d’unités</i>"
      },
      "expansion": "(Système international d’unités)",
      "name": "gloss"
    }
  ],
  "etymology_text": "Abbreviation of Système international (Système international d’unités).",
  "forms": [
    {
      "form": "S. I.",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "S.I. m",
      "name": "fr-proper noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "French abbreviations",
        "French entries with incorrect language header",
        "French lemmas",
        "French masculine nouns",
        "French proper nouns",
        "French terms spelled with .",
        "Pages with 3 entries",
        "Pages with entries"
      ],
      "glosses": [
        "S.I.; Synonym of SI (International System of Units)"
      ],
      "links": [
        [
          "S.I.",
          "S.I.#English"
        ],
        [
          "SI",
          "SI#Translingual"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "S.I."
}