"charge density" meaning in English

{
  "forms": [
    {
      "form": "charge densities",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "charge density (countable and uncountable, plural charge densities)",
      "name": "en-noun"
    }
  ],
  "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"
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          "source": "w"
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Physics",
          "orig": "en:Physics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The amount of electric charge per unit volume of space, unit area of a surface, or unit length of a curve."
      ],
      "id": "en-charge_density-en-noun-e~yJNJWD",
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "electric charge",
          "electric charge"
        ],
        [
          "volume",
          "volume"
        ],
        [
          "area",
          "area"
        ],
        [
          "length",
          "length"
        ]
      ],
      "raw_glosses": [
        "(physics) The amount of electric charge per unit volume of space, unit area of a surface, or unit length of a curve."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "the amount of electric charge per unit volume of space or unit area of a surface",
          "word": "varaustiheys"
        },
        {
          "code": "ro",
          "lang": "Romanian",
          "sense": "the amount of electric charge per unit volume of space or unit area of a surface",
          "tags": [
            "feminine"
          ],
          "word": "densitate de sarcină (electrică)"
        },
        {
          "code": "ro",
          "lang": "Romanian",
          "sense": "the amount of electric charge per unit volume of space or unit area of a surface",
          "tags": [
            "feminine"
          ],
          "word": "densitate de încărcare (electrică)"
        }
      ],
      "wikipedia": [
        "charge density"
      ]
    }
  ],
  "word": "charge density"
}

{
  "forms": [
    {
      "form": "charge densities",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "charge density (countable and uncountable, plural charge densities)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
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        "English multiword terms",
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        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations",
        "Terms with Romanian translations",
        "en:Physics"
      ],
      "glosses": [
        "The amount of electric charge per unit volume of space, unit area of a surface, or unit length of a curve."
      ],
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "electric charge",
          "electric charge"
        ],
        [
          "volume",
          "volume"
        ],
        [
          "area",
          "area"
        ],
        [
          "length",
          "length"
        ]
      ],
      "raw_glosses": [
        "(physics) The amount of electric charge per unit volume of space, unit area of a surface, or unit length of a curve."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "wikipedia": [
        "charge density"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "the amount of electric charge per unit volume of space or unit area of a surface",
      "word": "varaustiheys"
    },
    {
      "code": "ro",
      "lang": "Romanian",
      "sense": "the amount of electric charge per unit volume of space or unit area of a surface",
      "tags": [
        "feminine"
      ],
      "word": "densitate de sarcină (electrică)"
    },
    {
      "code": "ro",
      "lang": "Romanian",
      "sense": "the amount of electric charge per unit volume of space or unit area of a surface",
      "tags": [
        "feminine"
      ],
      "word": "densitate de încărcare (electrică)"
    }
  ],
  "word": "charge density"
}