"ὑπόγειος" meaning in 古希臘語

{
  "categories": [
    {
      "kind": "other",
      "name": "古希臘語倒三音節重音詞",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "古希臘語形容詞",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "古希臘語詞元",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "含有前綴ὑπο-的古希臘語詞",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "含有後綴-ιος的古希臘語詞",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "roman": "hupógeion",
      "word": "ῠ̔πόγειον"
    }
  ],
  "descendants": [
    {
      "lang_code": "la",
      "word": "hypogaeus"
    }
  ],
  "etymology_text": "源自 ῠ̔πο- (hupo-, “在……之下”) + γῆ (gê, “土地、泥土”) + -ῐος (-ios, 構成形容詞的派生後綴)。",
  "forms": [
    {
      "form": "hupógeios",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ῠ̔πόγειον",
      "tags": [
        "neuter"
      ]
    }
  ],
  "lang": "古希臘語",
  "lang_code": "grc",
  "pos": "adj",
  "senses": [
    {
      "glosses": [
        "地底，地下的"
      ],
      "id": "zh-ὑπόγειος-grc-adj-ew07d6s4"
    }
  ],
  "synonyms": [
    {
      "roman": "khthónios",
      "word": "χθόνῐος"
    }
  ],
  "tags": [
    "feminine",
    "masculine"
  ],
  "word": "ὑπόγειος"
}

{
  "categories": [
    "古希臘語倒三音節重音詞",
    "古希臘語形容詞",
    "古希臘語詞元",
    "含有前綴ὑπο-的古希臘語詞",
    "含有後綴-ιος的古希臘語詞"
  ],
  "derived": [
    {
      "roman": "hupógeion",
      "word": "ῠ̔πόγειον"
    }
  ],
  "descendants": [
    {
      "lang_code": "la",
      "word": "hypogaeus"
    }
  ],
  "etymology_text": "源自 ῠ̔πο- (hupo-, “在……之下”) + γῆ (gê, “土地、泥土”) + -ῐος (-ios, 構成形容詞的派生後綴)。",
  "forms": [
    {
      "form": "hupógeios",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ῠ̔πόγειον",
      "tags": [
        "neuter"
      ]
    }
  ],
  "lang": "古希臘語",
  "lang_code": "grc",
  "pos": "adj",
  "senses": [
    {
      "glosses": [
        "地底，地下的"
      ]
    }
  ],
  "synonyms": [
    {
      "roman": "khthónios",
      "word": "χθόνῐος"
    }
  ],
  "tags": [
    "feminine",
    "masculine"
  ],
  "word": "ὑπόγειος"
}