"binary theory" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "noun"
      },
      "expansion": "binary theory",
      "name": "head"
    }
  ],
  "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"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Chemistry",
          "orig": "en:Chemistry",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Obsolete scientific theories",
          "orig": "en:Obsolete scientific theories",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A theory suggesting that all salts contain only two substances, either both simple, or one simple and the other a compound playing the part of a simple body."
      ],
      "id": "en-binary_theory-en-noun-FOs0a5~6",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "salt",
          "salt"
        ],
        [
          "substance",
          "substance"
        ],
        [
          "simple",
          "simple"
        ],
        [
          "compound",
          "compound"
        ]
      ],
      "raw_glosses": [
        "(chemistry, obsolete) A theory suggesting that all salts contain only two substances, either both simple, or one simple and the other a compound playing the part of a simple body."
      ],
      "tags": [
        "obsolete"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "binary theory"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "noun"
      },
      "expansion": "binary theory",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with obsolete senses",
        "en:Chemistry",
        "en:Obsolete scientific theories"
      ],
      "glosses": [
        "A theory suggesting that all salts contain only two substances, either both simple, or one simple and the other a compound playing the part of a simple body."
      ],
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "salt",
          "salt"
        ],
        [
          "substance",
          "substance"
        ],
        [
          "simple",
          "simple"
        ],
        [
          "compound",
          "compound"
        ]
      ],
      "raw_glosses": [
        "(chemistry, obsolete) A theory suggesting that all salts contain only two substances, either both simple, or one simple and the other a compound playing the part of a simple body."
      ],
      "tags": [
        "obsolete"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "binary theory"
}