"ferro-" meaning in Polish

{
  "etymology_links": [
    [
      "ferrum",
      "ferrum#Latin"
    ],
    [
      "ferrum",
      "ferrum#Latin"
    ]
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "pl",
        "2": ":der",
        "3": "la:ferrum",
        "id": "iron",
        "text": "+",
        "tree": "1"
      },
      "expansion": "Etymology tree\nsubstratebor.\nOld Latin *fersom\nLatin ferrumder.\nPolish ferro-\n[Appendix:Glossary#derived_terms|Derived]] from\", \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"alt\" : \"*fersom\", \"lang_name\" : \"Old Latin\", \"status\" : \"inline\", \"children\" : [ { \"keyword_abbrev\" : \"bor.\", \"keyword_label\" : \"Borrowed from\", \"terms\" : [ { \"lang_name\" : \"substrate\", \"status\" : \"ok\", \"children\" : [ ], \"lang\" : \"qfa-sub\" } ], \"keyword\" : \"bor\" } ], \"lang\" : \"itc-ola\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Latin\", \"term\" : \"ferrum\", \"status\" : \"ok\", \"lang\" : \"la\" } ], \"keyword\" : \"derived\" } ], \"status\" : \"ok\", \"lang_name\" : \"Polish\", \"term\" : \"ferro-\", \"lang\" : \"pl\" }\" data-id=\"iron\" data-lang=\"pl\" data-title=\"ferro-\" id=\"Polish:_iron\">\nDerived from Latin ferrum.",
      "name": "etymon"
    }
  ],
  "etymology_text": "Etymology tree\nsubstratebor.\nOld Latin *fersom\nLatin ferrumder.\nPolish ferro-\nDerived from Latin ferrum.",
  "head_templates": [
    {
      "args": {
        "1": "pl",
        "2": "prefix"
      },
      "expansion": "ferro-",
      "name": "head"
    }
  ],
  "hyphenation": [
    "fer‧ro-"
  ],
  "hyphenations": [
    {
      "parts": [
        "fer‧ro",
        ""
      ]
    }
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages using etymon with no ID",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 6 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with etymology trees",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with etymon",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Polish entries with etymology texts",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Polish entries with etymology trees",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Polish entries with etymon",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Polish entries with incorrect language header",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "ferro- + magnetyzm → ferromagnetyzm",
          "type": "example"
        }
      ],
      "glosses": [
        "ferro-"
      ],
      "id": "en-ferro--pl-prefix-NX-2HZGR",
      "links": [
        [
          "ferro-",
          "ferro-#English"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/fɛr.rɔ/"
    },
    {
      "rhymes": "-ɛrrɔ"
    }
  ],
  "word": "ferro-"
}

{
  "etymology_links": [
    [
      "ferrum",
      "ferrum#Latin"
    ],
    [
      "ferrum",
      "ferrum#Latin"
    ]
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "pl",
        "2": ":der",
        "3": "la:ferrum",
        "id": "iron",
        "text": "+",
        "tree": "1"
      },
      "expansion": "Etymology tree\nsubstratebor.\nOld Latin *fersom\nLatin ferrumder.\nPolish ferro-\n[Appendix:Glossary#derived_terms|Derived]] from\", \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"alt\" : \"*fersom\", \"lang_name\" : \"Old Latin\", \"status\" : \"inline\", \"children\" : [ { \"keyword_abbrev\" : \"bor.\", \"keyword_label\" : \"Borrowed from\", \"terms\" : [ { \"lang_name\" : \"substrate\", \"status\" : \"ok\", \"children\" : [ ], \"lang\" : \"qfa-sub\" } ], \"keyword\" : \"bor\" } ], \"lang\" : \"itc-ola\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Latin\", \"term\" : \"ferrum\", \"status\" : \"ok\", \"lang\" : \"la\" } ], \"keyword\" : \"derived\" } ], \"status\" : \"ok\", \"lang_name\" : \"Polish\", \"term\" : \"ferro-\", \"lang\" : \"pl\" }\" data-id=\"iron\" data-lang=\"pl\" data-title=\"ferro-\" id=\"Polish:_iron\">\nDerived from Latin ferrum.",
      "name": "etymon"
    }
  ],
  "etymology_text": "Etymology tree\nsubstratebor.\nOld Latin *fersom\nLatin ferrumder.\nPolish ferro-\nDerived from Latin ferrum.",
  "head_templates": [
    {
      "args": {
        "1": "pl",
        "2": "prefix"
      },
      "expansion": "ferro-",
      "name": "head"
    }
  ],
  "hyphenation": [
    "fer‧ro-"
  ],
  "hyphenations": [
    {
      "parts": [
        "fer‧ro",
        ""
      ]
    }
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        "Pages using catfix",
        "Pages using etymon with no ID",
        "Pages with 6 entries",
        "Pages with entries",
        "Pages with etymology trees",
        "Pages with etymon",
        "Polish 2-syllable words",
        "Polish entries with etymology texts",
        "Polish entries with etymology trees",
        "Polish entries with etymon",
        "Polish entries with incorrect language header",
        "Polish lemmas",
        "Polish prefixes",
        "Polish terms derived from Latin",
        "Polish terms derived from Old Latin",
        "Polish terms derived from substrate languages",
        "Polish terms with IPA pronunciation",
        "Polish terms with audio pronunciation",
        "Rhymes:Polish/ɛrrɔ",
        "Rhymes:Polish/ɛrrɔ/2 syllables"
      ],
      "examples": [
        {
          "text": "ferro- + magnetyzm → ferromagnetyzm",
          "type": "example"
        }
      ],
      "glosses": [
        "ferro-"
      ],
      "links": [
        [
          "ferro-",
          "ferro-#English"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/fɛr.rɔ/"
    },
    {
      "rhymes": "-ɛrrɔ"
    }
  ],
  "word": "ferro-"
}