"oxyde d’hydrogène" meaning in Français

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Locutions nominales en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Substances chimiques en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Motcomposé de oxyde et de hydrogène."
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Termes rares en français",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "(nom systématique) Eau."
      ],
      "id": "fr-oxyde_d’hydrogène-fr-noun-gernXLUU",
      "tags": [
        "rare"
      ],
      "topics": [
        "chemistry"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɔk.sid d‿i.dʁɔ.ʒɛn\\"
    }
  ],
  "synonyms": [
    {
      "word": "acide hydroxyque"
    },
    {
      "sense": "nom UICPA",
      "word": "eau"
    },
    {
      "word": "hydroxyde d’hydrogène"
    },
    {
      "word": "hydroxyde d’oxonium"
    },
    {
      "raw_tags": [
        "Par plaisanterie"
      ],
      "tags": [
        "rare"
      ],
      "word": "monoxyde de dihydrogène"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "oxyde d’hydrogène"
}

{
  "categories": [
    "Compositions en français",
    "Locutions nominales en français",
    "Substances chimiques en français",
    "français"
  ],
  "etymology_texts": [
    "Motcomposé de oxyde et de hydrogène."
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        "Termes rares en français"
      ],
      "glosses": [
        "(nom systématique) Eau."
      ],
      "tags": [
        "rare"
      ],
      "topics": [
        "chemistry"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɔk.sid d‿i.dʁɔ.ʒɛn\\"
    }
  ],
  "synonyms": [
    {
      "word": "acide hydroxyque"
    },
    {
      "sense": "nom UICPA",
      "word": "eau"
    },
    {
      "word": "hydroxyde d’hydrogène"
    },
    {
      "word": "hydroxyde d’oxonium"
    },
    {
      "raw_tags": [
        "Par plaisanterie"
      ],
      "tags": [
        "rare"
      ],
      "word": "monoxyde de dihydrogène"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "oxyde d’hydrogène"
}