"-ona" meaning in Esperanto

{
  "head_templates": [
    {
      "args": {
        "1": "eo",
        "2": "suffix"
      },
      "expansion": "-ona",
      "name": "head"
    }
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Esperanto 1894 Universala Vortaro",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Esperanto BRO1",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Esperanto entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 8 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Words approved by the Akademio de Esperanto",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "11 13 19 22 16 8 3 3 2 2 2",
          "kind": "other",
          "name": "Pages with 8 entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "kvar (“four”) + -ona → kvarona (“quarter, fourth”)",
          "type": "example"
        },
        {
          "text": "du (“two”) + -ona → duona (“half”)",
          "type": "example"
        }
      ],
      "glosses": [
        "marks fractions"
      ],
      "id": "en--ona-eo-suffix-ValtIIIy",
      "links": [
        [
          "fraction",
          "fraction#English"
        ]
      ],
      "related": [
        {
          "word": "Esperanto terms suffixed with -ono"
        }
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-ona"
}

{
  "categories": [
    "Pages with 8 entries",
    "Pages with entries"
  ],
  "head_templates": [
    {
      "args": {
        "1": "eo",
        "2": "suffix"
      },
      "expansion": "-ona",
      "name": "head"
    }
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "suffix",
  "related": [
    {
      "word": "Esperanto terms suffixed with -ono"
    }
  ],
  "senses": [
    {
      "categories": [
        "Esperanto 1894 Universala Vortaro",
        "Esperanto BRO1",
        "Esperanto entries with incorrect language header",
        "Esperanto lemmas",
        "Esperanto suffixes",
        "Pages with 8 entries",
        "Pages with entries",
        "Words approved by the Akademio de Esperanto"
      ],
      "examples": [
        {
          "text": "kvar (“four”) + -ona → kvarona (“quarter, fourth”)",
          "type": "example"
        },
        {
          "text": "du (“two”) + -ona → duona (“half”)",
          "type": "example"
        }
      ],
      "glosses": [
        "marks fractions"
      ],
      "links": [
        [
          "fraction",
          "fraction#English"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-ona"
}