"RD&D" meaning in All languages combined

{
  "etymology_text": "From the common abbreviation \"R&D.\"",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "RD&D (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "research"
        },
        {
          "word": "development and demonstration"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of research, development and demonstration."
      ],
      "id": "en-RD&D-en-noun-E4OFTU1u",
      "links": [
        [
          "research",
          "research#English"
        ],
        [
          "development",
          "development#English"
        ],
        [
          "demonstration",
          "demonstration#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism",
        "uncountable"
      ]
    }
  ],
  "word": "RD&D"
}

{
  "etymology_text": "From the common abbreviation \"R&D.\"",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "RD&D (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "research"
        },
        {
          "word": "development and demonstration"
        }
      ],
      "categories": [
        "English abbreviations",
        "English entries with incorrect language header",
        "English initialisms",
        "English lemmas",
        "English nouns",
        "English terms spelled with &",
        "English uncountable nouns",
        "English words without vowels",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Initialism of research, development and demonstration."
      ],
      "links": [
        [
          "research",
          "research#English"
        ],
        [
          "development",
          "development#English"
        ],
        [
          "demonstration",
          "demonstration#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism",
        "uncountable"
      ]
    }
  ],
  "word": "RD&D"
}