"predentin" meaning in English

{
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        "2": "pre",
        "3": "dentin"
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      "expansion": "pre- + dentin",
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  ],
  "etymology_text": "From pre- + dentin.",
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      "expansion": "predentin (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",
          "parents": [
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          "source": "w"
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          "name": "English terms prefixed with pre-",
          "parents": [],
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      "examples": [
        {
          "ref": "2013 August 22, Tao Xu et al., “Estrogen deficiency reduces the dentinogenic capacity of rat lower incisors”, in Journal of Molecular Histology, volume 45, →DOI:",
          "text": "At the growing end next to the apex of human developing teeth where dentinogenesis is most active, predentin exhibits its greatest thickness, whereas at the coronal region where primary dentin has been completely formed, predentin width is dramatically reduced to a mean value of 14.8 micron (Couve 1987 ).",
          "type": "quote"
        }
      ],
      "glosses": [
        "The matrix of organic fibres that calcifies to form dentin"
      ],
      "id": "en-predentin-en-noun-9HWhuVKA",
      "links": [
        [
          "matrix",
          "matrix"
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        [
          "organic",
          "organic"
        ],
        [
          "fibre",
          "fibre"
        ],
        [
          "calcifies",
          "calcify"
        ],
        [
          "dentin",
          "dentin"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "predentin"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "pre",
        "3": "dentin"
      },
      "expansion": "pre- + dentin",
      "name": "prefix"
    }
  ],
  "etymology_text": "From pre- + dentin.",
  "head_templates": [
    {
      "args": {
        "1": "-"
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      "expansion": "predentin (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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      "examples": [
        {
          "ref": "2013 August 22, Tao Xu et al., “Estrogen deficiency reduces the dentinogenic capacity of rat lower incisors”, in Journal of Molecular Histology, volume 45, →DOI:",
          "text": "At the growing end next to the apex of human developing teeth where dentinogenesis is most active, predentin exhibits its greatest thickness, whereas at the coronal region where primary dentin has been completely formed, predentin width is dramatically reduced to a mean value of 14.8 micron (Couve 1987 ).",
          "type": "quote"
        }
      ],
      "glosses": [
        "The matrix of organic fibres that calcifies to form dentin"
      ],
      "links": [
        [
          "matrix",
          "matrix"
        ],
        [
          "organic",
          "organic"
        ],
        [
          "fibre",
          "fibre"
        ],
        [
          "calcifies",
          "calcify"
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          "dentin",
          "dentin"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "predentin"
}