"hard-edge painting" meaning in English

{
  "etymology_text": "Coined by curator and art critic Jules Langsner, along with Peter Selz, in 1959, to describe the work of certain Californian painters.",
  "forms": [
    {
      "form": "hard-edge paintings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "hard-edge painting (countable and uncountable, plural hard-edge paintings)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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          "name": "English entries with incorrect language header",
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          "source": "w"
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          "source": "w"
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      ],
      "glosses": [
        "A style of painting having abrupt transitions between areas of (often plain) color."
      ],
      "id": "en-hard-edge_painting-en-noun-m8hhq6dM",
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        [
          "plain",
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        ],
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          "color",
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        ]
      ],
      "raw_glosses": [
        "(art) A style of painting having abrupt transitions between areas of (often plain) color."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "art",
        "arts"
      ],
      "wikipedia": [
        "hard-edge painting"
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    }
  ],
  "word": "hard-edge painting"
}

{
  "etymology_text": "Coined by curator and art critic Jules Langsner, along with Peter Selz, in 1959, to describe the work of certain Californian painters.",
  "forms": [
    {
      "form": "hard-edge paintings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "hard-edge painting (countable and uncountable, plural hard-edge paintings)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns",
        "en:Art"
      ],
      "glosses": [
        "A style of painting having abrupt transitions between areas of (often plain) color."
      ],
      "links": [
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          "art",
          "art#Noun"
        ],
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          "abrupt",
          "abrupt"
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        ],
        [
          "area",
          "area"
        ],
        [
          "plain",
          "plain"
        ],
        [
          "color",
          "color"
        ]
      ],
      "raw_glosses": [
        "(art) A style of painting having abrupt transitions between areas of (often plain) color."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "art",
        "arts"
      ],
      "wikipedia": [
        "hard-edge painting"
      ]
    }
  ],
  "word": "hard-edge painting"
}