"Droste effect" meaning in English

{
  "etymology_text": "From the image used on Droste cocoa powder, one of the main Dutch brands, of a nurse carrying a serving tray with a cup of hot chocolate and a box with the same image. The company was founded by Gerardus Johannes Droste in 1863.",
  "forms": [
    {
      "form": "Droste effects",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Droste effect (plural Droste effects)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "The effect of a picture appearing within itself recursively, so that the inner picture contains another even smaller picture, and so on."
      ],
      "id": "en-Droste_effect-en-noun-B1G3qurs",
      "links": [
        [
          "picture",
          "picture"
        ],
        [
          "recursive",
          "recursive"
        ]
      ],
      "related": [
        {
          "word": "mise en abyme"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈdɹɔstə əˈfɛkt/"
    }
  ],
  "word": "Droste effect"
}

{
  "etymology_text": "From the image used on Droste cocoa powder, one of the main Dutch brands, of a nurse carrying a serving tray with a cup of hot chocolate and a box with the same image. The company was founded by Gerardus Johannes Droste in 1863.",
  "forms": [
    {
      "form": "Droste effects",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Droste effect (plural Droste effects)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "mise en abyme"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "The effect of a picture appearing within itself recursively, so that the inner picture contains another even smaller picture, and so on."
      ],
      "links": [
        [
          "picture",
          "picture"
        ],
        [
          "recursive",
          "recursive"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈdɹɔstə əˈfɛkt/"
    }
  ],
  "word": "Droste effect"
}