"sidero-" meaning in English

{
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "undefined derivations"
      },
      "expansion": "",
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    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "sīdus"
      },
      "expansion": "Latin sīdus",
      "name": "uder"
    }
  ],
  "etymology_text": "From Latin sīdus, sideris, (\"constellation\").",
  "head_templates": [
    {
      "args": {
        "1": "en",
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        "head": "",
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      },
      "expansion": "sidero-",
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    },
    {
      "args": {},
      "expansion": "sidero-",
      "name": "en-prefix"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "_dis": "54 46",
          "kind": "other",
          "name": "English undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Related to stars or constellations, as sidereal relationships."
      ],
      "id": "en-sidero--en-prefix-ch1X-W8Q",
      "links": [
        [
          "sidereal",
          "sidereal"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "sidero-"
}

{
  "etymology_number": 2,
  "etymology_templates": [
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      "args": {
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      },
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    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "σίδηρος",
        "4": "",
        "5": "iron"
      },
      "expansion": "Ancient Greek σίδηρος (sídēros, “iron”)",
      "name": "uder"
    }
  ],
  "etymology_text": "From Ancient Greek σίδηρος (sídēros, “iron”).",
  "head_templates": [
    {
      "args": {
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      "expansion": "sidero-",
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    },
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      "args": {},
      "expansion": "sidero-",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "_dis": "54 46",
          "kind": "other",
          "name": "English undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "17 83",
          "kind": "other",
          "langcode": "en",
          "name": "Steel",
          "orig": "en:Steel",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "11 89",
          "kind": "topical",
          "langcode": "en",
          "name": "Iron",
          "orig": "en:Iron",
          "parents": [
            "Transition metals",
            "Chemical elements",
            "Metals",
            "Matter",
            "Metallurgy",
            "Chemistry",
            "Nature",
            "Technology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Related to iron or steel, as in siderosis (fibrosis caused by iron deposits)"
      ],
      "id": "en-sidero--en-prefix-QDMgJAf4",
      "links": [
        [
          "iron",
          "iron"
        ],
        [
          "steel",
          "steel"
        ],
        [
          "siderosis",
          "siderosis"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "sidero-"
}

{
  "categories": [
    "English lemmas",
    "English prefixes",
    "English terms derived from Ancient Greek",
    "English terms derived from Latin",
    "English undefined derivations",
    "en:Iron",
    "en:Steel"
  ],
  "etymology_number": 1,
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    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "sīdus"
      },
      "expansion": "Latin sīdus",
      "name": "uder"
    }
  ],
  "etymology_text": "From Latin sīdus, sideris, (\"constellation\").",
  "head_templates": [
    {
      "args": {
        "1": "en",
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      "expansion": "sidero-",
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    },
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      "args": {},
      "expansion": "sidero-",
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    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
    {
      "glosses": [
        "Related to stars or constellations, as sidereal relationships."
      ],
      "links": [
        [
          "sidereal",
          "sidereal"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "sidero-"
}

{
  "categories": [
    "English lemmas",
    "English prefixes",
    "English terms derived from Ancient Greek",
    "English undefined derivations",
    "en:Iron",
    "en:Steel"
  ],
  "etymology_number": 2,
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      "args": {
        "1": "en",
        "2": "grc",
        "3": "σίδηρος",
        "4": "",
        "5": "iron"
      },
      "expansion": "Ancient Greek σίδηρος (sídēros, “iron”)",
      "name": "uder"
    }
  ],
  "etymology_text": "From Ancient Greek σίδηρος (sídēros, “iron”).",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prefix",
        "head": "",
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      "expansion": "sidero-",
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    },
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    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
    {
      "glosses": [
        "Related to iron or steel, as in siderosis (fibrosis caused by iron deposits)"
      ],
      "links": [
        [
          "iron",
          "iron"
        ],
        [
          "steel",
          "steel"
        ],
        [
          "siderosis",
          "siderosis"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "sidero-"
}