"sodium sulfite" meaning in English

{
  "forms": [
    {
      "form": "sodium sulfites",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "sodium sulphite",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sodium sulfite (plural sodium sulfites)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "langcode": "en",
          "name": "Chemistry",
          "orig": "en:Chemistry",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The sodium salt of sulfurous acid, Na₂SO₃, used as a food preservative, in photography and in many industrial applications."
      ],
      "id": "en-sodium_sulfite-en-noun-~EVhsepN",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "salt",
          "salt"
        ],
        [
          "sulfurous acid",
          "sulfurous acid"
        ],
        [
          "food",
          "food"
        ],
        [
          "preservative",
          "preservative"
        ],
        [
          "photography",
          "photography"
        ]
      ],
      "raw_glosses": [
        "(chemistry) The sodium salt of sulfurous acid, Na₂SO₃, used as a food preservative, in photography and in many industrial applications."
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "sodium sulfite"
}

{
  "forms": [
    {
      "form": "sodium sulfites",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "sodium sulphite",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
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      "expansion": "sodium sulfite (plural sodium sulfites)",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
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        "en:Chemistry"
      ],
      "glosses": [
        "The sodium salt of sulfurous acid, Na₂SO₃, used as a food preservative, in photography and in many industrial applications."
      ],
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "salt",
          "salt"
        ],
        [
          "sulfurous acid",
          "sulfurous acid"
        ],
        [
          "food",
          "food"
        ],
        [
          "preservative",
          "preservative"
        ],
        [
          "photography",
          "photography"
        ]
      ],
      "raw_glosses": [
        "(chemistry) The sodium salt of sulfurous acid, Na₂SO₃, used as a food preservative, in photography and in many industrial applications."
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "sodium sulfite"
}