"NTSC" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Acronymes en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "(Acronyme) Initiales de National Television System Committee."
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "word": "PAL"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en français de l’audiovisuel",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en français",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Standard historique de codage des couleurs utilisé en Amérique du Nord et au Japon."
      ],
      "id": "fr-NTSC-en-noun-2bTK~Qr1",
      "raw_tags": [
        "Audiovisuel"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɛn.tiː.ɛs.siː\\"
    }
  ],
  "tags": [
    "invariable"
  ],
  "word": "NTSC"
}

{
  "categories": [
    "Acronymes en anglais",
    "Lemmes en anglais",
    "Noms communs en anglais",
    "anglais"
  ],
  "etymology_texts": [
    "(Acronyme) Initiales de National Television System Committee."
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "word": "PAL"
    }
  ],
  "senses": [
    {
      "categories": [
        "Lexique en français de l’audiovisuel",
        "Wiktionnaire:Exemples manquants en français"
      ],
      "glosses": [
        "Standard historique de codage des couleurs utilisé en Amérique du Nord et au Japon."
      ],
      "raw_tags": [
        "Audiovisuel"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɛn.tiː.ɛs.siː\\"
    }
  ],
  "tags": [
    "invariable"
  ],
  "word": "NTSC"
}