"standard-definition television" meaning in English

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      "expansion": "standard-definition television (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
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      ],
      "glosses": [
        "One or all of the lower resolution television systems"
      ],
      "id": "en-standard-definition_television-en-noun-8PlJKUer",
      "links": [
        [
          "systems",
          "systems"
        ]
      ],
      "related": [
        {
          "word": "high-definition television"
        }
      ],
      "synonyms": [
        {
          "word": "SDTV"
        }
      ],
      "tags": [
        "uncountable"
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "télévision à définition standard"
        },
        {
          "alt": "ひょうじゅんかいぞうどテレビジョン",
          "code": "ja",
          "lang": "Japanese",
          "roman": "hyōjunkaizōdo terebijon",
          "sense": "Translations",
          "word": "標準解像度テレビジョン"
        },
        {
          "alt": "ひょうじゅんかいぞうどテレビ",
          "code": "ja",
          "lang": "Japanese",
          "roman": "hyōjunkaizōdo terebi",
          "sense": "Translations",
          "word": "標準解像度テレビ"
        },
        {
          "code": "ko",
          "lang": "Korean",
          "roman": "dijiteol pyojun tellebijeon",
          "sense": "Translations",
          "word": "디지털 표준(標準) 텔레비전"
        }
      ]
    }
  ],
  "word": "standard-definition television"
}

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "high-definition television"
    }
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      "glosses": [
        "One or all of the lower resolution television systems"
      ],
      "links": [
        [
          "systems",
          "systems"
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      "tags": [
        "uncountable"
      ]
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  ],
  "synonyms": [
    {
      "word": "SDTV"
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "tags": [
        "feminine"
      ],
      "word": "télévision à définition standard"
    },
    {
      "alt": "ひょうじゅんかいぞうどテレビジョン",
      "code": "ja",
      "lang": "Japanese",
      "roman": "hyōjunkaizōdo terebijon",
      "sense": "Translations",
      "word": "標準解像度テレビジョン"
    },
    {
      "alt": "ひょうじゅんかいぞうどテレビ",
      "code": "ja",
      "lang": "Japanese",
      "roman": "hyōjunkaizōdo terebi",
      "sense": "Translations",
      "word": "標準解像度テレビ"
    },
    {
      "code": "ko",
      "lang": "Korean",
      "roman": "dijiteol pyojun tellebijeon",
      "sense": "Translations",
      "word": "디지털 표준(標準) 텔레비전"
    }
  ],
  "word": "standard-definition television"
}