"assertant" meaning in Français

{
  "anagrams": [
    {
      "word": "essartant"
    },
    {
      "word": "ratassent"
    },
    {
      "word": "rentassât"
    },
    {
      "word": "retassant"
    },
    {
      "word": "tarassent"
    },
    {
      "word": "tarentass"
    }
  ],
  "categories": [
    {
      "kind": "other",
      "name": "Formes de verbes en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "verb",
  "pos_title": "Forme de verbe",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en français",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              81,
              90
            ]
          ],
          "ref": "Pascal Engel, Davidson et la philosophie du langage, 1994, page 30",
          "text": "Le prédicat de vérité nous permet ainsi de « déciter » la phrase de gauche, en l’assertant."
        }
      ],
      "form_of": [
        {
          "word": "asserter"
        }
      ],
      "glosses": [
        "Participe présent du verbe asserter."
      ],
      "id": "fr-assertant-fr-verb-7D4dleMT"
    }
  ],
  "sounds": [
    {
      "ipa": "\\a.sɛʁ.tɑ̃\\"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "assertant"
}

{
  "anagrams": [
    {
      "word": "essartant"
    },
    {
      "word": "ratassent"
    },
    {
      "word": "rentassât"
    },
    {
      "word": "retassant"
    },
    {
      "word": "tarassent"
    },
    {
      "word": "tarentass"
    }
  ],
  "categories": [
    "Formes de verbes en français",
    "français"
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "verb",
  "pos_title": "Forme de verbe",
  "senses": [
    {
      "categories": [
        "Exemples en français"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              81,
              90
            ]
          ],
          "ref": "Pascal Engel, Davidson et la philosophie du langage, 1994, page 30",
          "text": "Le prédicat de vérité nous permet ainsi de « déciter » la phrase de gauche, en l’assertant."
        }
      ],
      "form_of": [
        {
          "word": "asserter"
        }
      ],
      "glosses": [
        "Participe présent du verbe asserter."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\a.sɛʁ.tɑ̃\\"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "assertant"
}