"seuil de séparation" meaning in Français

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Dates manquantes en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Locutions nominales en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en croate",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "(Date à préciser) Composé de seuil, de et séparation."
  ],
  "forms": [
    {
      "form": "seuils de séparation",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en français de la cartographie",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Distance minimale entre deux éléments graphiques permettant de les distinguer à l’œil nu dans des conditions normales d’observation."
      ],
      "id": "fr-seuil_de_séparation-fr-noun-xl~Fn-OO",
      "topics": [
        "cartography"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\sœj də se.pa.ʁa.sjɔ̃\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "translations": [
    {
      "lang": "Croate",
      "lang_code": "hr",
      "word": "stupanj razgraničivanja"
    }
  ],
  "word": "seuil de séparation"
}

{
  "categories": [
    "Compositions en français",
    "Dates manquantes en français",
    "Locutions nominales en français",
    "Traductions en croate",
    "français"
  ],
  "etymology_texts": [
    "(Date à préciser) Composé de seuil, de et séparation."
  ],
  "forms": [
    {
      "form": "seuils de séparation",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        "Lexique en français de la cartographie"
      ],
      "glosses": [
        "Distance minimale entre deux éléments graphiques permettant de les distinguer à l’œil nu dans des conditions normales d’observation."
      ],
      "topics": [
        "cartography"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\sœj də se.pa.ʁa.sjɔ̃\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "translations": [
    {
      "lang": "Croate",
      "lang_code": "hr",
      "word": "stupanj razgraničivanja"
    }
  ],
  "word": "seuil de séparation"
}