"underpenetrated" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "penetrated"
      },
      "expansion": "under- + penetrated",
      "name": "prefix"
    }
  ],
  "etymology_text": "under- + penetrated",
  "forms": [
    {
      "form": "more underpenetrated",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most underpenetrated",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "underpenetrated (comparative more underpenetrated, superlative most underpenetrated)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with under-",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2015 June 25, Chad Bray, “I.P.O. to Give Operator of Match.com and Tinder Its Own Stock”, in New York Times",
          "text": "The dating industry has come a long way since its inception, but the category remains underpenetrated.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Into which insufficient penetration has been achieved."
      ],
      "id": "en-underpenetrated-en-adj-fs-KNsNH",
      "links": [
        [
          "penetration",
          "penetration"
        ]
      ]
    }
  ],
  "word": "underpenetrated"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "penetrated"
      },
      "expansion": "under- + penetrated",
      "name": "prefix"
    }
  ],
  "etymology_text": "under- + penetrated",
  "forms": [
    {
      "form": "more underpenetrated",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most underpenetrated",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "underpenetrated (comparative more underpenetrated, superlative most underpenetrated)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms prefixed with under-",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2015 June 25, Chad Bray, “I.P.O. to Give Operator of Match.com and Tinder Its Own Stock”, in New York Times",
          "text": "The dating industry has come a long way since its inception, but the category remains underpenetrated.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Into which insufficient penetration has been achieved."
      ],
      "links": [
        [
          "penetration",
          "penetration"
        ]
      ]
    }
  ],
  "word": "underpenetrated"
}