"dc" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "dc",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "DC"
        }
      ],
      "categories": [],
      "examples": [
        {
          "ref": "2009 January 30, D. C. Elias et al., “Control of Graphene's Properties by Reversible Hydrogenation: Evidence for Graphane”, in Science",
          "text": "We used a low-pressure (0.1 mbar) hydrogen-argon mixture (10% H 2 ) with dc plasma ignited between two aluminum electrodes.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative letter-case form of DC"
      ],
      "id": "en-dc-en-noun-OgGKSjDf",
      "links": [
        [
          "DC",
          "DC#English"
        ]
      ],
      "tags": [
        "alt-of"
      ]
    },
    {
      "alt_of": [
        {
          "word": "double crochet"
        }
      ],
      "categories": [
        {
          "_dis": "16 84",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Initialism of double crochet."
      ],
      "id": "en-dc-en-noun-Tykcuhyt",
      "links": [
        [
          "double crochet",
          "double crochet#English"
        ]
      ],
      "qualifier": "crochet",
      "raw_glosses": [
        "(crochet) Initialism of double crochet."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "word": "dc"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English nouns with unknown or uncertain plurals",
    "English words without vowels"
  ],
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "dc",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "DC"
        }
      ],
      "categories": [
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2009 January 30, D. C. Elias et al., “Control of Graphene's Properties by Reversible Hydrogenation: Evidence for Graphane”, in Science",
          "text": "We used a low-pressure (0.1 mbar) hydrogen-argon mixture (10% H 2 ) with dc plasma ignited between two aluminum electrodes.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative letter-case form of DC"
      ],
      "links": [
        [
          "DC",
          "DC#English"
        ]
      ],
      "tags": [
        "alt-of"
      ]
    },
    {
      "alt_of": [
        {
          "word": "double crochet"
        }
      ],
      "categories": [
        "English initialisms"
      ],
      "glosses": [
        "Initialism of double crochet."
      ],
      "links": [
        [
          "double crochet",
          "double crochet#English"
        ]
      ],
      "qualifier": "crochet",
      "raw_glosses": [
        "(crochet) Initialism of double crochet."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "word": "dc"
}