"xero-" meaning in Italian

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "grc",
        "3": "ξηρός",
        "4": "",
        "5": "dry"
      },
      "expansion": "Ancient Greek ξηρός (xērós, “dry”)",
      "name": "der"
    }
  ],
  "etymology_text": "From Ancient Greek ξηρός (xērós, “dry”).",
  "head_templates": [
    {
      "args": {
        "1": "it",
        "2": "prefix"
      },
      "expansion": "xero-",
      "name": "head"
    }
  ],
  "hyphenation": [
    "xè‧ro-"
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "xero- (all senses)"
      ],
      "id": "en-xero--it-prefix-Wu6XIv3v",
      "links": [
        [
          "xero-",
          "xero-#English"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌksɛ.ro/"
    }
  ],
  "word": "xero-"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "grc",
        "3": "ξηρός",
        "4": "",
        "5": "dry"
      },
      "expansion": "Ancient Greek ξηρός (xērós, “dry”)",
      "name": "der"
    }
  ],
  "etymology_text": "From Ancient Greek ξηρός (xērós, “dry”).",
  "head_templates": [
    {
      "args": {
        "1": "it",
        "2": "prefix"
      },
      "expansion": "xero-",
      "name": "head"
    }
  ],
  "hyphenation": [
    "xè‧ro-"
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        "Italian 2-syllable words",
        "Italian entries with incorrect language header",
        "Italian lemmas",
        "Italian prefixes",
        "Italian terms derived from Ancient Greek",
        "Italian terms spelled with X",
        "Italian terms with IPA pronunciation",
        "Pages using catfix",
        "Pages with 3 entries",
        "Pages with entries"
      ],
      "glosses": [
        "xero- (all senses)"
      ],
      "links": [
        [
          "xero-",
          "xero-#English"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌksɛ.ro/"
    }
  ],
  "word": "xero-"
}