"melano-" meaning in Catalan

{
  "etymology_templates": [
    {
      "args": {
        "1": "ca",
        "2": "grc",
        "3": "μέλας",
        "4": "",
        "5": "black"
      },
      "expansion": "Ancient Greek μέλας (mélas, “black”)",
      "name": "der"
    },
    {
      "args": {
        "1": "grc",
        "2": "μέλανος"
      },
      "expansion": "μέλανος (mélanos)",
      "name": "m"
    }
  ],
  "etymology_text": "Derived from Ancient Greek μέλας (mélas, “black”), (genitive μέλανος (mélanos)).",
  "head_templates": [
    {
      "args": {
        "1": "ca",
        "2": "prefix"
      },
      "expansion": "melano-",
      "name": "head"
    }
  ],
  "lang": "Catalan",
  "lang_code": "ca",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Catalan entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "melano-"
      ],
      "id": "en-melano--ca-prefix-0dwhTA5U",
      "links": [
        [
          "melano-",
          "melano-#English"
        ]
      ],
      "related": [
        {
          "word": "melànic"
        }
      ],
      "synonyms": [
        {
          "tags": [
            "before-vowel"
          ],
          "word": "melan-"
        }
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "melano-"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ca",
        "2": "grc",
        "3": "μέλας",
        "4": "",
        "5": "black"
      },
      "expansion": "Ancient Greek μέλας (mélas, “black”)",
      "name": "der"
    },
    {
      "args": {
        "1": "grc",
        "2": "μέλανος"
      },
      "expansion": "μέλανος (mélanos)",
      "name": "m"
    }
  ],
  "etymology_text": "Derived from Ancient Greek μέλας (mélas, “black”), (genitive μέλανος (mélanos)).",
  "head_templates": [
    {
      "args": {
        "1": "ca",
        "2": "prefix"
      },
      "expansion": "melano-",
      "name": "head"
    }
  ],
  "lang": "Catalan",
  "lang_code": "ca",
  "pos": "prefix",
  "related": [
    {
      "word": "melànic"
    }
  ],
  "senses": [
    {
      "categories": [
        "Catalan entries with incorrect language header",
        "Catalan lemmas",
        "Catalan prefixes",
        "Catalan terms derived from Ancient Greek"
      ],
      "glosses": [
        "melano-"
      ],
      "links": [
        [
          "melano-",
          "melano-#English"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "synonyms": [
    {
      "tags": [
        "before-vowel"
      ],
      "word": "melan-"
    }
  ],
  "word": "melano-"
}