"ανιόν" meaning in Греческий

{
  "categories": [
    {
      "kind": "other",
      "name": "Греческие существительные",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Средний род/el",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_text": "От ??",
  "lang": "Греческий",
  "lang_code": "el",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "анион"
      ],
      "id": "ru-ανιόν-el-noun-s1~OI68E",
      "raw_glosses": [
        "хим. анион"
      ],
      "topics": [
        "chemistry"
      ]
    }
  ],
  "word": "ανιόν"
}

{
  "categories": [
    "Греческие существительные",
    "Средний род/el"
  ],
  "etymology_text": "От ??",
  "lang": "Греческий",
  "lang_code": "el",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "анион"
      ],
      "raw_glosses": [
        "хим. анион"
      ],
      "topics": [
        "chemistry"
      ]
    }
  ],
  "word": "ανιόν"
}