"pró-" meaning in Portuguese

{
  "etymology_templates": [
    {
      "args": {
        "1": "pt",
        "2": "la",
        "3": "prō",
        "4": "",
        "5": "in favour of, on behalf of"
      },
      "expansion": "Latin prō (“in favour of, on behalf of”)",
      "name": "der"
    }
  ],
  "etymology_text": "From Latin prō (“in favour of, on behalf of”).",
  "head_templates": [
    {
      "args": {
        "1": "pt",
        "2": "prefix"
      },
      "expansion": "pró-",
      "name": "head"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "prefix",
  "senses": [
    {
      "antonyms": [
        {
          "word": "anti-"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Portuguese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "pró-vida"
        }
      ],
      "glosses": [
        "pro-"
      ],
      "id": "en-pró--pt-prefix-auf4TMcZ",
      "links": [
        [
          "pro-",
          "pro-"
        ]
      ],
      "synonyms": [
        {
          "word": "a favor de"
        }
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈpɾɔ/"
    }
  ],
  "word": "pró-"
}

{
  "derived": [
    {
      "word": "pró-vida"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "pt",
        "2": "la",
        "3": "prō",
        "4": "",
        "5": "in favour of, on behalf of"
      },
      "expansion": "Latin prō (“in favour of, on behalf of”)",
      "name": "der"
    }
  ],
  "etymology_text": "From Latin prō (“in favour of, on behalf of”).",
  "head_templates": [
    {
      "args": {
        "1": "pt",
        "2": "prefix"
      },
      "expansion": "pró-",
      "name": "head"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "prefix",
  "senses": [
    {
      "antonyms": [
        {
          "word": "anti-"
        }
      ],
      "categories": [
        "Portuguese 1-syllable words",
        "Portuguese entries with incorrect language header",
        "Portuguese lemmas",
        "Portuguese prefixes",
        "Portuguese terms derived from Latin",
        "Portuguese terms with IPA pronunciation"
      ],
      "glosses": [
        "pro-"
      ],
      "links": [
        [
          "pro-",
          "pro-"
        ]
      ],
      "synonyms": [
        {
          "word": "a favor de"
        }
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈpɾɔ/"
    }
  ],
  "word": "pró-"
}