"等比級数" meaning in Japanese

{
  "etymology_templates": [
    {
      "args": {
        "1": "等比",
        "2": "とうひ",
        "3": "級数",
        "4": "きゅうすう"
      },
      "expansion": "等比(とうひ) (tōhi) + 級数(きゅうすう) (kyūsū)",
      "name": "ja-com"
    }
  ],
  "etymology_text": "等比(とうひ) (tōhi) + 級数(きゅうすう) (kyūsū)",
  "forms": [
    {
      "form": "等比級数",
      "ruby": [
        [
          "等",
          "とう"
        ],
        [
          "比",
          "ひ"
        ],
        [
          "級",
          "きゅう"
        ],
        [
          "数",
          "すう"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "tōhikyūsū",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "等比級數",
      "tags": [
        "alternative",
        "kanji",
        "kyūjitai"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "とうひきゅうすう"
      },
      "expansion": "等(とう)比(ひ)級(きゅう)数(すう) • (tōhikyūsū)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms read with on'yomi",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with 4 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with Nakadaka pitch accent (Tōkyō)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with non-redundant non-automated sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "geometric series"
      ],
      "id": "en-等比級数-ja-noun-piQFV5Uz",
      "links": [
        [
          "geometric series",
          "geometric series"
        ]
      ],
      "synonyms": [
        {
          "word": "幾何級数"
        }
      ]
    }
  ],
  "sounds": [
    {
      "other": "とーひきゅうすう"
    },
    {
      "other": "とーひきゅうすう"
    },
    {
      "ipa": "[to̞ːçikʲɨːsɨː]"
    }
  ],
  "word": "等比級数"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "等比",
        "2": "とうひ",
        "3": "級数",
        "4": "きゅうすう"
      },
      "expansion": "等比(とうひ) (tōhi) + 級数(きゅうすう) (kyūsū)",
      "name": "ja-com"
    }
  ],
  "etymology_text": "等比(とうひ) (tōhi) + 級数(きゅうすう) (kyūsū)",
  "forms": [
    {
      "form": "等比級数",
      "ruby": [
        [
          "等",
          "とう"
        ],
        [
          "比",
          "ひ"
        ],
        [
          "級",
          "きゅう"
        ],
        [
          "数",
          "すう"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "tōhikyūsū",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "等比級數",
      "tags": [
        "alternative",
        "kanji",
        "kyūjitai"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "とうひきゅうすう"
      },
      "expansion": "等(とう)比(ひ)級(きゅう)数(すう) • (tōhikyūsū)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Japanese compound terms",
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese nouns",
        "Japanese terms read with on'yomi",
        "Japanese terms spelled with fifth grade kanji",
        "Japanese terms spelled with second grade kanji",
        "Japanese terms spelled with third grade kanji",
        "Japanese terms spelled with 数 read as すう",
        "Japanese terms spelled with 比 read as ひ",
        "Japanese terms spelled with 等 read as とう",
        "Japanese terms spelled with 級 read as きゅう",
        "Japanese terms with 4 kanji",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with IPA pronunciation with pitch accent",
        "Japanese terms with Nakadaka pitch accent (Tōkyō)",
        "Japanese terms with non-redundant non-automated sortkeys",
        "Japanese terms with redundant sortkeys",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "geometric series"
      ],
      "links": [
        [
          "geometric series",
          "geometric series"
        ]
      ],
      "synonyms": [
        {
          "word": "幾何級数"
        }
      ]
    }
  ],
  "sounds": [
    {
      "other": "とーひきゅうすう"
    },
    {
      "other": "とーひきゅうすう"
    },
    {
      "ipa": "[to̞ːçikʲɨːsɨː]"
    }
  ],
  "word": "等比級数"
}