"-ison" meaning in Ancien français

{
  "categories": [
    {
      "kind": "other",
      "name": "Mots en ancien français issus d’un mot en latin",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Suffixes en ancien français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Ancien français",
      "orig": "ancien français",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "lang": "Français",
      "lang_code": "fr",
      "word": "-aison"
    }
  ],
  "etymology_texts": [
    "Variante de -oison, du latin -itio."
  ],
  "lang": "Ancien français",
  "lang_code": "fro",
  "pos": "suffix",
  "pos_title": "Suffixe",
  "related": [
    {
      "word": "-oison"
    }
  ],
  "senses": [
    {
      "glosses": [
        "-aison, suffixe nominal féminin."
      ],
      "id": "fr--ison-fro-suffix-qN8-maCk"
    }
  ],
  "tags": [
    "morpheme"
  ],
  "word": "-ison"
}

{
  "categories": [
    "Mots en ancien français issus d’un mot en latin",
    "Suffixes en ancien français",
    "ancien français"
  ],
  "derived": [
    {
      "lang": "Français",
      "lang_code": "fr",
      "word": "-aison"
    }
  ],
  "etymology_texts": [
    "Variante de -oison, du latin -itio."
  ],
  "lang": "Ancien français",
  "lang_code": "fro",
  "pos": "suffix",
  "pos_title": "Suffixe",
  "related": [
    {
      "word": "-oison"
    }
  ],
  "senses": [
    {
      "glosses": [
        "-aison, suffixe nominal féminin."
      ]
    }
  ],
  "tags": [
    "morpheme"
  ],
  "word": "-ison"
}