"grand filtre" meaning in Français

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Locutions nominales en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "(1998)Composé de grand et de filtre",
    "Idée émise par l’économiste américain Robin Hanson"
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "related": [
    {
      "word": "équation de Drake"
    },
    {
      "word": "grand silence"
    },
    {
      "word": "paradoxe de Fermi"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en français",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Suite de barrières qui nuiraient à l’émergence d’une civilisation extraterrestre durable dans le temps."
      ],
      "id": "fr-grand_filtre-fr-noun-GHHKV9xR"
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɡʁɑ̃ filtʁ\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "translations": [
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "Great Filter"
    }
  ],
  "word": "grand filtre"
}

{
  "categories": [
    "Compositions en français",
    "Locutions nominales en français",
    "Traductions en anglais",
    "français"
  ],
  "etymology_texts": [
    "(1998)Composé de grand et de filtre",
    "Idée émise par l’économiste américain Robin Hanson"
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "related": [
    {
      "word": "équation de Drake"
    },
    {
      "word": "grand silence"
    },
    {
      "word": "paradoxe de Fermi"
    }
  ],
  "senses": [
    {
      "categories": [
        "Wiktionnaire:Exemples manquants en français"
      ],
      "glosses": [
        "Suite de barrières qui nuiraient à l’émergence d’une civilisation extraterrestre durable dans le temps."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɡʁɑ̃ filtʁ\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "translations": [
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "Great Filter"
    }
  ],
  "word": "grand filtre"
}