"tydz." meaning in Polish

{
  "head_templates": [
    {
      "args": {
        "1": "m-in"
      },
      "expansion": "tydz. m inan",
      "name": "pl-noun"
    }
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "tydzień"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Polish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Abbreviation of tydzień."
      ],
      "id": "en-tydz.-pl-noun-AlNnG74T",
      "links": [
        [
          "tydzień",
          "tydzień#Polish"
        ]
      ],
      "related": [
        {
          "english": "year",
          "word": "r."
        },
        {
          "english": "month",
          "word": "mies."
        },
        {
          "english": "hour",
          "word": "godz."
        },
        {
          "english": "second",
          "word": "sek."
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "inanimate",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈtɨ.d͡ʑɛɲ/"
    },
    {
      "rhymes": "-ɨd͡ʑɛɲ"
    }
  ],
  "word": "tydz."
}

{
  "head_templates": [
    {
      "args": {
        "1": "m-in"
      },
      "expansion": "tydz. m inan",
      "name": "pl-noun"
    }
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "noun",
  "related": [
    {
      "english": "year",
      "word": "r."
    },
    {
      "english": "month",
      "word": "mies."
    },
    {
      "english": "hour",
      "word": "godz."
    },
    {
      "english": "second",
      "word": "sek."
    }
  ],
  "senses": [
    {
      "alt_of": [
        {
          "word": "tydzień"
        }
      ],
      "categories": [
        "Polish 2-syllable words",
        "Polish abbreviations",
        "Polish entries with incorrect language header",
        "Polish inanimate nouns",
        "Polish lemmas",
        "Polish masculine nouns",
        "Polish nouns",
        "Polish terms spelled with .",
        "Polish terms with IPA pronunciation",
        "Rhymes:Polish/ɨd͡ʑɛɲ"
      ],
      "glosses": [
        "Abbreviation of tydzień."
      ],
      "links": [
        [
          "tydzień",
          "tydzień#Polish"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "inanimate",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈtɨ.d͡ʑɛɲ/"
    },
    {
      "rhymes": "-ɨd͡ʑɛɲ"
    }
  ],
  "word": "tydz."
}