"undersample" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "sample"
      },
      "expansion": "under- + sample",
      "name": "prefix"
    }
  ],
  "etymology_text": "From under- + sample.",
  "forms": [
    {
      "form": "undersamples",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "undersampling",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "undersampled",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "undersampled",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "undersample (third-person singular simple present undersamples, present participle undersampling, simple past and past participle undersampled)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "glosses": [
        "To take insufficient samples when sampling"
      ],
      "id": "en-undersample-en-verb-ktNa9fn8",
      "links": [
        [
          "sample",
          "sample"
        ],
        [
          "sampling",
          "sampling"
        ]
      ]
    },
    {
      "categories": [
        {
          "_dis": "11 89",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "35 65",
          "kind": "other",
          "name": "English terms prefixed with under-",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "13 87",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "6 94",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "To sample a signal at a frequency well below its Nyquist rate."
      ],
      "id": "en-undersample-en-verb-GyoNxbX6",
      "links": [
        [
          "sample",
          "sample"
        ],
        [
          "signal",
          "signal"
        ],
        [
          "frequency",
          "frequency"
        ],
        [
          "Nyquist rate",
          "Nyquist rate"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "audio": "LL-Q1860 (eng)-Flame, not lame-undersample.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/0/02/LL-Q1860_%28eng%29-Flame%2C_not_lame-undersample.wav/LL-Q1860_%28eng%29-Flame%2C_not_lame-undersample.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/0/02/LL-Q1860_%28eng%29-Flame%2C_not_lame-undersample.wav/LL-Q1860_%28eng%29-Flame%2C_not_lame-undersample.wav.ogg"
    }
  ],
  "word": "undersample"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English terms prefixed with under-",
    "English verbs",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "sample"
      },
      "expansion": "under- + sample",
      "name": "prefix"
    }
  ],
  "etymology_text": "From under- + sample.",
  "forms": [
    {
      "form": "undersamples",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "undersampling",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "undersampled",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "undersampled",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "undersample (third-person singular simple present undersamples, present participle undersampling, simple past and past participle undersampled)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "glosses": [
        "To take insufficient samples when sampling"
      ],
      "links": [
        [
          "sample",
          "sample"
        ],
        [
          "sampling",
          "sampling"
        ]
      ]
    },
    {
      "glosses": [
        "To sample a signal at a frequency well below its Nyquist rate."
      ],
      "links": [
        [
          "sample",
          "sample"
        ],
        [
          "signal",
          "signal"
        ],
        [
          "frequency",
          "frequency"
        ],
        [
          "Nyquist rate",
          "Nyquist rate"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "audio": "LL-Q1860 (eng)-Flame, not lame-undersample.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/0/02/LL-Q1860_%28eng%29-Flame%2C_not_lame-undersample.wav/LL-Q1860_%28eng%29-Flame%2C_not_lame-undersample.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/0/02/LL-Q1860_%28eng%29-Flame%2C_not_lame-undersample.wav/LL-Q1860_%28eng%29-Flame%2C_not_lame-undersample.wav.ogg"
    }
  ],
  "word": "undersample"
}