"tetraptych" meaning in English

{
  "forms": [
    {
      "form": "tetraptychs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "s"
      },
      "expansion": "tetraptych (plural tetraptychs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Art",
          "orig": "en:Art",
          "parents": [
            "Culture",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Four",
          "orig": "en:Four",
          "parents": [
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "a polyptych having four sections"
      ],
      "id": "en-tetraptych-en-noun-0Cd6cUcr",
      "links": [
        [
          "art",
          "art#Noun"
        ],
        [
          "polyptych",
          "polyptych"
        ]
      ],
      "raw_glosses": [
        "(art) a polyptych having four sections"
      ],
      "topics": [
        "art",
        "arts"
      ]
    }
  ],
  "word": "tetraptych"
}

{
  "forms": [
    {
      "form": "tetraptychs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "s"
      },
      "expansion": "tetraptych (plural tetraptychs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Art",
        "en:Four"
      ],
      "glosses": [
        "a polyptych having four sections"
      ],
      "links": [
        [
          "art",
          "art#Noun"
        ],
        [
          "polyptych",
          "polyptych"
        ]
      ],
      "raw_glosses": [
        "(art) a polyptych having four sections"
      ],
      "topics": [
        "art",
        "arts"
      ]
    }
  ],
  "word": "tetraptych"
}