"pc" meaning in Translingual

{
  "derived": [
    {
      "_dis1": "0 0",
      "alt": "kiloparsec",
      "word": "kpc"
    },
    {
      "_dis1": "0 0",
      "alt": "megaparsec",
      "word": "Mpc"
    },
    {
      "_dis1": "0 0",
      "alt": "gigaparsec",
      "word": "Gpc"
    },
    {
      "_dis1": "0 0",
      "english": "cubic parsec",
      "word": "pc³"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "symbol"
      },
      "expansion": "pc",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "symbol",
  "related": [
    {
      "_dis1": "0 0",
      "word": "second of parallax"
    },
    {
      "_dis1": "0 0",
      "word": "parallax second"
    },
    {
      "_dis1": "0 0",
      "word": "psc"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "mul",
          "name": "Astronomy",
          "orig": "mul:Astronomy",
          "parents": [
            "Sciences",
            "Space",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "mul",
          "name": "Metrology",
          "orig": "mul:Metrology",
          "parents": [
            "Applied sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "60 40",
          "kind": "other",
          "name": "Translingual entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "parsec"
      ],
      "id": "en-pc-mul-symbol-kGbp8qxW",
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "metrology",
          "metrology"
        ],
        [
          "parsec",
          "parsec"
        ]
      ],
      "raw_glosses": [
        "(astronomy, metrology) parsec"
      ],
      "topics": [
        "astronomy",
        "metrology",
        "natural-sciences"
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "mul",
          "name": "Typography",
          "orig": "mul:Typography",
          "parents": [
            "Printing",
            "Writing",
            "Industries",
            "Human behaviour",
            "Language",
            "Business",
            "Human",
            "Communication",
            "Economics",
            "Society",
            "All topics",
            "Social sciences",
            "Fundamental",
            "Sciences"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "pica"
      ],
      "id": "en-pc-mul-symbol-S4Lxequa",
      "links": [
        [
          "typography",
          "typography"
        ],
        [
          "pica",
          "pica"
        ]
      ],
      "raw_glosses": [
        "(typography) pica"
      ],
      "topics": [
        "media",
        "publishing",
        "typography"
      ]
    }
  ],
  "word": "pc"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English words without vowels",
    "Entries with translation boxes",
    "Pages with 2 entries",
    "Pages with entries",
    "Terms with Bulgarian translations",
    "Terms with Czech translations",
    "Terms with French translations",
    "Terms with Hungarian translations",
    "Terms with Russian translations",
    "Terms with Swedish translations",
    "Translingual entries with incorrect language header",
    "Translingual lemmas",
    "Translingual symbols"
  ],
  "derived": [
    {
      "alt": "kiloparsec",
      "word": "kpc"
    },
    {
      "alt": "megaparsec",
      "word": "Mpc"
    },
    {
      "alt": "gigaparsec",
      "word": "Gpc"
    },
    {
      "english": "cubic parsec",
      "word": "pc³"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "symbol"
      },
      "expansion": "pc",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "symbol",
  "related": [
    {
      "word": "second of parallax"
    },
    {
      "word": "parallax second"
    },
    {
      "word": "psc"
    }
  ],
  "senses": [
    {
      "categories": [
        "mul:Astronomy",
        "mul:Metrology"
      ],
      "glosses": [
        "parsec"
      ],
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "metrology",
          "metrology"
        ],
        [
          "parsec",
          "parsec"
        ]
      ],
      "raw_glosses": [
        "(astronomy, metrology) parsec"
      ],
      "topics": [
        "astronomy",
        "metrology",
        "natural-sciences"
      ]
    },
    {
      "categories": [
        "mul:Typography"
      ],
      "glosses": [
        "pica"
      ],
      "links": [
        [
          "typography",
          "typography"
        ],
        [
          "pica",
          "pica"
        ]
      ],
      "raw_glosses": [
        "(typography) pica"
      ],
      "topics": [
        "media",
        "publishing",
        "typography"
      ]
    }
  ],
  "word": "pc"
}