"hyposulfurous acid" meaning in English

{
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      "expansion": "hyposulfurous acid (uncountable)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Acids",
          "orig": "en:Acids",
          "parents": [
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
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            "Fundamental"
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Inorganic compounds",
          "orig": "en:Inorganic compounds",
          "parents": [
            "Matter",
            "Chemistry",
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            "Sciences",
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Sulfur",
          "orig": "en:Sulfur",
          "parents": [
            "Chalcogens",
            "Chemical elements",
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An unstable acid, H₂S₂O₂, only known in solution, used as a reducing agent; its salts are hyposulfites)."
      ],
      "id": "en-hyposulfurous_acid-en-noun-qr69SsAY",
      "links": [
        [
          "inorganic chemistry",
          "inorganic chemistry"
        ],
        [
          "unstable",
          "unstable"
        ],
        [
          "solution",
          "solution"
        ],
        [
          "reducing agent",
          "reducing agent"
        ],
        [
          "salt",
          "salt"
        ],
        [
          "hyposulfite",
          "hyposulfite"
        ]
      ],
      "raw_glosses": [
        "(inorganic chemistry) An unstable acid, H₂S₂O₂, only known in solution, used as a reducing agent; its salts are hyposulfites)."
      ],
      "related": [
        {
          "word": "thiosulfuric acid"
        }
      ],
      "synonyms": [
        {
          "word": "hyposulphurous acid"
        },
        {
          "tags": [
            "archaic"
          ],
          "word": "hydrosulfurous acid"
        },
        {
          "tags": [
            "archaic"
          ],
          "word": "hydrosulphurous acid"
        }
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "chemistry",
        "inorganic-chemistry",
        "natural-sciences",
        "physical-sciences"
      ],
      "translations": [
        {
          "code": "is",
          "lang": "Icelandic",
          "sense": "acid",
          "tags": [
            "masculine"
          ],
          "word": "brennisteinsundirsýrlingur"
        },
        {
          "code": "it",
          "lang": "Italian",
          "sense": "acid",
          "tags": [
            "masculine"
          ],
          "word": "acido iposolforoso"
        }
      ]
    }
  ],
  "word": "hyposulfurous acid"
}

{
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      "expansion": "hyposulfurous acid (uncountable)",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "thiosulfuric acid"
    }
  ],
  "senses": [
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        "English nouns",
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        "en:Inorganic compounds",
        "en:Sulfur"
      ],
      "glosses": [
        "An unstable acid, H₂S₂O₂, only known in solution, used as a reducing agent; its salts are hyposulfites)."
      ],
      "links": [
        [
          "inorganic chemistry",
          "inorganic chemistry"
        ],
        [
          "unstable",
          "unstable"
        ],
        [
          "solution",
          "solution"
        ],
        [
          "reducing agent",
          "reducing agent"
        ],
        [
          "salt",
          "salt"
        ],
        [
          "hyposulfite",
          "hyposulfite"
        ]
      ],
      "raw_glosses": [
        "(inorganic chemistry) An unstable acid, H₂S₂O₂, only known in solution, used as a reducing agent; its salts are hyposulfites)."
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "chemistry",
        "inorganic-chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "hyposulphurous acid"
    },
    {
      "tags": [
        "archaic"
      ],
      "word": "hydrosulfurous acid"
    },
    {
      "tags": [
        "archaic"
      ],
      "word": "hydrosulphurous acid"
    }
  ],
  "translations": [
    {
      "code": "is",
      "lang": "Icelandic",
      "sense": "acid",
      "tags": [
        "masculine"
      ],
      "word": "brennisteinsundirsýrlingur"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "acid",
      "tags": [
        "masculine"
      ],
      "word": "acido iposolforoso"
    }
  ],
  "word": "hyposulfurous acid"
}