"dilatations" meaning in Français

{
  "anagrams": [
    {
      "word": "daltonisait"
    }
  ],
  "categories": [
    {
      "kind": "other",
      "name": "Formes de noms communs en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "dilatation",
      "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": [
        {
          "ref": "Eugène Boullanger, Industries agricoles de fermentation : distillerie agricole et industrielle, alcools, eaux-de-vie de fruits, rhums, 1918",
          "text": "L’alcoométrie volumétrique présente de gros inconvénients. Les contractions de volume que subissent les mélanges d’eau et d’alcool, les dilatations sous l’action de la chaleur compliquent beaucoup le problème."
        }
      ],
      "form_of": [
        {
          "word": "dilatation"
        }
      ],
      "glosses": [
        "Pluriel de dilatation."
      ],
      "id": "fr-dilatations-fr-noun-naFClZEu"
    }
  ],
  "sounds": [
    {
      "ipa": "\\di.la.ta.sjɔ̃\\"
    }
  ],
  "tags": [
    "feminine",
    "form-of"
  ],
  "word": "dilatations"
}

{
  "anagrams": [
    {
      "word": "daltonisait"
    }
  ],
  "categories": [
    "Formes de noms communs en français",
    "français"
  ],
  "forms": [
    {
      "form": "dilatation",
      "tags": [
        "singular"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Forme de nom commun",
  "senses": [
    {
      "categories": [
        "Exemples en français"
      ],
      "examples": [
        {
          "ref": "Eugène Boullanger, Industries agricoles de fermentation : distillerie agricole et industrielle, alcools, eaux-de-vie de fruits, rhums, 1918",
          "text": "L’alcoométrie volumétrique présente de gros inconvénients. Les contractions de volume que subissent les mélanges d’eau et d’alcool, les dilatations sous l’action de la chaleur compliquent beaucoup le problème."
        }
      ],
      "form_of": [
        {
          "word": "dilatation"
        }
      ],
      "glosses": [
        "Pluriel de dilatation."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\di.la.ta.sjɔ̃\\"
    }
  ],
  "tags": [
    "feminine",
    "form-of"
  ],
  "word": "dilatations"
}