"existissem" meaning in Portugais

{
  "categories": [
    {
      "kind": "other",
      "name": "Formes de verbes en portugais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Portugais",
      "orig": "portugais",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "se vocês/eles/elas existissem"
    }
  ],
  "lang": "Portugais",
  "lang_code": "pt",
  "pos": "verb",
  "pos_title": "Forme de verbe",
  "senses": [
    {
      "form_of": [
        {
          "word": "existir"
        }
      ],
      "glosses": [
        "Troisième personne du pluriel de l’imparfait du subjonctif de existir."
      ],
      "id": "fr-existissem-pt-verb-qn5VdGra"
    }
  ],
  "sounds": [
    {
      "ipa": "\\i.ziʃ.tˈi.sɐ̃j̃\\"
    },
    {
      "ipa": "\\i.zis.tʃˈi.sẽj̃\\"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "existissem"
}

{
  "categories": [
    "Formes de verbes en portugais",
    "portugais"
  ],
  "forms": [
    {
      "form": "se vocês/eles/elas existissem"
    }
  ],
  "lang": "Portugais",
  "lang_code": "pt",
  "pos": "verb",
  "pos_title": "Forme de verbe",
  "senses": [
    {
      "form_of": [
        {
          "word": "existir"
        }
      ],
      "glosses": [
        "Troisième personne du pluriel de l’imparfait du subjonctif de existir."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\i.ziʃ.tˈi.sɐ̃j̃\\"
    },
    {
      "ipa": "\\i.zis.tʃˈi.sẽj̃\\"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "existissem"
}