"pyroxylines" meaning in Français

{
  "categories": [
    {
      "kind": "other",
      "name": "Formes de noms communs en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "pyroxyline",
      "tags": [
        "singular"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Forme de nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en français",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              43,
              54
            ]
          ],
          "ref": "Société chimique de Paris: Répertoire de chimie appliquée - Tome 5, 1863",
          "text": "Le coton-poudre de M. de Lenk, diffère des pyroxylines ordinaires, par la conversion complète du coton en une combinaison chimique uniforme et bien définie."
        }
      ],
      "form_of": [
        {
          "word": "pyroxyline"
        }
      ],
      "glosses": [
        "Pluriel de pyroxyline."
      ],
      "id": "fr-pyroxylines-fr-noun-86JXoyII"
    }
  ],
  "sounds": [
    {
      "ipa": "\\pi.ʁɔk.si.lin\\"
    }
  ],
  "tags": [
    "feminine",
    "form-of"
  ],
  "word": "pyroxylines"
}

{
  "categories": [
    "Formes de noms communs en français",
    "français"
  ],
  "forms": [
    {
      "form": "pyroxyline",
      "tags": [
        "singular"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Forme de nom commun",
  "senses": [
    {
      "categories": [
        "Exemples en français"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              43,
              54
            ]
          ],
          "ref": "Société chimique de Paris: Répertoire de chimie appliquée - Tome 5, 1863",
          "text": "Le coton-poudre de M. de Lenk, diffère des pyroxylines ordinaires, par la conversion complète du coton en une combinaison chimique uniforme et bien définie."
        }
      ],
      "form_of": [
        {
          "word": "pyroxyline"
        }
      ],
      "glosses": [
        "Pluriel de pyroxyline."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\pi.ʁɔk.si.lin\\"
    }
  ],
  "tags": [
    "feminine",
    "form-of"
  ],
  "word": "pyroxylines"
}