"петаметрите" meaning in Bulgarian

{
  "forms": [
    {
      "form": "петаме́трите",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "petamétrite",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "bg",
        "2": "noun form",
        "head": "петаме́трите"
      },
      "expansion": "петаме́трите • (petamétrite)",
      "name": "head"
    }
  ],
  "lang": "Bulgarian",
  "lang_code": "bg",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Bulgarian 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"
        }
      ],
      "form_of": [
        {
          "extra": "petamétǎr",
          "word": "петаме́тър"
        }
      ],
      "glosses": [
        "definite plural of петаме́тър (petamétǎr)"
      ],
      "id": "en-петаметрите-bg-noun-XwmUWB8i",
      "links": [
        [
          "петаме́тър",
          "петаметър#Bulgarian"
        ]
      ],
      "tags": [
        "definite",
        "form-of",
        "plural"
      ]
    }
  ],
  "word": "петаметрите"
}

{
  "forms": [
    {
      "form": "петаме́трите",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "petamétrite",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "bg",
        "2": "noun form",
        "head": "петаме́трите"
      },
      "expansion": "петаме́трите • (petamétrite)",
      "name": "head"
    }
  ],
  "lang": "Bulgarian",
  "lang_code": "bg",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Bulgarian entries with incorrect language header",
        "Bulgarian non-lemma forms",
        "Bulgarian noun forms",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "form_of": [
        {
          "extra": "petamétǎr",
          "word": "петаме́тър"
        }
      ],
      "glosses": [
        "definite plural of петаме́тър (petamétǎr)"
      ],
      "links": [
        [
          "петаме́тър",
          "петаметър#Bulgarian"
        ]
      ],
      "tags": [
        "definite",
        "form-of",
        "plural"
      ]
    }
  ],
  "word": "петаметрите"
}