"epsílon" meaning in Portugais

{
  "categories": [
    {
      "kind": "other",
      "name": "Dates manquantes en portugais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Genres manquants en portugais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en portugais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en portugais issus d’un mot en grec ancien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en portugais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Portugais",
      "orig": "portugais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "(Date à préciser) Du grec ancien ἒ ψιλόν, è psilón."
  ],
  "lang": "Portugais",
  "lang_code": "pt",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "genre à préciser : {{m}}, {{f}}, {{mf}}, {{n}} ?"
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en portugais",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Epsilon."
      ],
      "id": "fr-epsílon-pt-noun-3SbPoHQ1"
    }
  ],
  "word": "epsílon"
}

{
  "categories": [
    "Dates manquantes en portugais",
    "Genres manquants en portugais",
    "Lemmes en portugais",
    "Mots en portugais issus d’un mot en grec ancien",
    "Noms communs en portugais",
    "portugais"
  ],
  "etymology_texts": [
    "(Date à préciser) Du grec ancien ἒ ψιλόν, è psilón."
  ],
  "lang": "Portugais",
  "lang_code": "pt",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "genre à préciser : {{m}}, {{f}}, {{mf}}, {{n}} ?"
  ],
  "senses": [
    {
      "categories": [
        "Wiktionnaire:Exemples manquants en portugais"
      ],
      "glosses": [
        "Epsilon."
      ]
    }
  ],
  "word": "epsílon"
}