"1d" meaning in English

{
  "etymology_number": 1,
  "etymology_text": "From 1 + d (“old penny”).",
  "forms": [
    {
      "form": "1ds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "1d (plural 1ds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "a coin with the value of 1 pence/penny; 1/240th of a pound, in pre-decimalisation currency, never used for 'one new penny'",
          "word": "one penny"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Irish English",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "8 92",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "10 90",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "5 95",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Abbreviation of one penny (a coin with the value of 1 pence/penny; 1/240th of a pound, in pre-decimalisation currency, never used for 'one new penny')."
      ],
      "id": "en-1d-en-noun-~MF1Ddpu",
      "links": [
        [
          "one",
          "one#English"
        ],
        [
          "penny",
          "penny#English"
        ],
        [
          "decimalisation",
          "decimalisation#English"
        ]
      ],
      "raw_glosses": [
        "(British, Ireland, historical) Abbreviation of one penny (a coin with the value of 1 pence/penny; 1/240th of a pound, in pre-decimalisation currency, never used for 'one new penny')."
      ],
      "tags": [
        "British",
        "Ireland",
        "abbreviation",
        "alt-of",
        "historical"
      ]
    }
  ],
  "word": "1d"
}

{
  "etymology_number": 2,
  "forms": [
    {
      "form": "more 1d",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most 1d",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "1d (comparative more 1d, superlative most 1d)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "one-dimensional"
        }
      ],
      "categories": [],
      "glosses": [
        "Initialism of one-dimensional."
      ],
      "id": "en-1d-en-adj-Fdt4dXrh",
      "links": [
        [
          "one-dimensional",
          "one-dimensional#English"
        ]
      ],
      "synonyms": [
        {
          "word": "1-d"
        },
        {
          "word": "1-D"
        },
        {
          "word": "1D"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "word": "1d"
}

{
  "categories": [
    "English adjectives",
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English terms spelled with numbers",
    "English words without vowels",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_number": 1,
  "etymology_text": "From 1 + d (“old penny”).",
  "forms": [
    {
      "form": "1ds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "1d (plural 1ds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "a coin with the value of 1 pence/penny; 1/240th of a pound, in pre-decimalisation currency, never used for 'one new penny'",
          "word": "one penny"
        }
      ],
      "categories": [
        "British English",
        "English abbreviations",
        "English terms with historical senses",
        "Irish English"
      ],
      "glosses": [
        "Abbreviation of one penny (a coin with the value of 1 pence/penny; 1/240th of a pound, in pre-decimalisation currency, never used for 'one new penny')."
      ],
      "links": [
        [
          "one",
          "one#English"
        ],
        [
          "penny",
          "penny#English"
        ],
        [
          "decimalisation",
          "decimalisation#English"
        ]
      ],
      "raw_glosses": [
        "(British, Ireland, historical) Abbreviation of one penny (a coin with the value of 1 pence/penny; 1/240th of a pound, in pre-decimalisation currency, never used for 'one new penny')."
      ],
      "tags": [
        "British",
        "Ireland",
        "abbreviation",
        "alt-of",
        "historical"
      ]
    }
  ],
  "word": "1d"
}

{
  "categories": [
    "English adjectives",
    "English entries with incorrect language header",
    "English lemmas",
    "English terms spelled with numbers",
    "English words without vowels",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_number": 2,
  "forms": [
    {
      "form": "more 1d",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most 1d",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "1d (comparative more 1d, superlative most 1d)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "one-dimensional"
        }
      ],
      "categories": [
        "English initialisms"
      ],
      "glosses": [
        "Initialism of one-dimensional."
      ],
      "links": [
        [
          "one-dimensional",
          "one-dimensional#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "1-d"
    },
    {
      "word": "1-D"
    },
    {
      "word": "1D"
    }
  ],
  "word": "1d"
}