"upsilono" meaning in Esperanto

{
  "etymology_templates": [
    {
      "args": {
        "1": "eo",
        "2": "grc",
        "3": "ὖ ψιλόν",
        "t": "the letter Υ"
      },
      "expansion": "Ancient Greek ὖ ψιλόν (û psilón, “the letter Υ”)",
      "name": "der"
    }
  ],
  "etymology_text": "From Ancient Greek ὖ ψιλόν (û psilón, “the letter Υ”).",
  "forms": [
    {
      "form": "upsilonon",
      "tags": [
        "accusative",
        "singular"
      ]
    },
    {
      "form": "upsilonoj",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "upsilonojn",
      "tags": [
        "accusative",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "upsilono (accusative singular upsilonon, plural upsilonoj, accusative plural upsilonojn)",
      "name": "eo-head"
    }
  ],
  "hyphenation": [
    "up‧si‧lo‧no"
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Esperanto entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "eo",
          "name": "Greek letter names",
          "orig": "eo:Greek letter names",
          "parents": [
            "Letter names",
            "Letters, symbols, and punctuation",
            "Names",
            "Orthography",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Writing",
            "Fundamental",
            "Nouns",
            "Human behaviour",
            "Language",
            "Lemmas",
            "Human",
            "Communication"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "upsilon"
      ],
      "id": "en-upsilono-eo-noun-~aKyomjR",
      "links": [
        [
          "upsilon",
          "upsilon"
        ]
      ],
      "wikipedia": [
        "eo:Upsilono"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[upsiˈlono]"
    },
    {
      "rhymes": "-ono"
    }
  ],
  "word": "upsilono"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "eo",
        "2": "grc",
        "3": "ὖ ψιλόν",
        "t": "the letter Υ"
      },
      "expansion": "Ancient Greek ὖ ψιλόν (û psilón, “the letter Υ”)",
      "name": "der"
    }
  ],
  "etymology_text": "From Ancient Greek ὖ ψιλόν (û psilón, “the letter Υ”).",
  "forms": [
    {
      "form": "upsilonon",
      "tags": [
        "accusative",
        "singular"
      ]
    },
    {
      "form": "upsilonoj",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "upsilonojn",
      "tags": [
        "accusative",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "upsilono (accusative singular upsilonon, plural upsilonoj, accusative plural upsilonojn)",
      "name": "eo-head"
    }
  ],
  "hyphenation": [
    "up‧si‧lo‧no"
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Esperanto entries with incorrect language header",
        "Esperanto lemmas",
        "Esperanto nouns",
        "Esperanto terms derived from Ancient Greek",
        "Esperanto terms with IPA pronunciation",
        "Pages with 1 entry",
        "Pages with entries",
        "Rhymes:Esperanto/ono",
        "eo:Greek letter names"
      ],
      "glosses": [
        "upsilon"
      ],
      "links": [
        [
          "upsilon",
          "upsilon"
        ]
      ],
      "wikipedia": [
        "eo:Upsilono"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[upsiˈlono]"
    },
    {
      "rhymes": "-ono"
    }
  ],
  "word": "upsilono"
}