"canceler" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "cancel",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "cancel + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From cancel + -er.",
  "forms": [
    {
      "form": "cancelers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "canceler (plural cancelers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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          "kind": "other",
          "name": "English terms suffixed with -er (agent noun)",
          "parents": [],
          "source": "w"
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      ],
      "derived": [
        {
          "word": "cascaded feedback canceler"
        },
        {
          "word": "IF canceler"
        },
        {
          "word": "three-pulse cascaded canceler"
        },
        {
          "word": "two-pulse canceler"
        }
      ],
      "examples": [
        {
          "ref": "2003, Steven A. Tretter, Communication system design using DSP algorithms:",
          "text": "The echo canceler is basically an adaptive tapped delay-line filter with near and far-end sections.",
          "type": "quote"
        }
      ],
      "form_of": [
        {
          "extra": "Something that, or someone who cancels something; specifically an electronic device that cancels a signal",
          "word": "cancel"
        }
      ],
      "glosses": [
        "agent noun of cancel: Something that, or someone who cancels something; specifically an electronic device that cancels a signal."
      ],
      "id": "en-canceler-en-noun-gol99~hp",
      "links": [
        [
          "cancel",
          "cancel#English"
        ],
        [
          "cancel",
          "cancel"
        ],
        [
          "electronic",
          "electronic"
        ],
        [
          "device",
          "device"
        ],
        [
          "signal",
          "signal"
        ]
      ],
      "synonyms": [
        {
          "word": "canceller"
        }
      ],
      "tags": [
        "agent",
        "form-of"
      ]
    }
  ],
  "word": "canceler"
}

{
  "derived": [
    {
      "word": "cascaded feedback canceler"
    },
    {
      "word": "IF canceler"
    },
    {
      "word": "three-pulse cascaded canceler"
    },
    {
      "word": "two-pulse canceler"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "cancel",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "cancel + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From cancel + -er.",
  "forms": [
    {
      "form": "cancelers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "canceler (plural cancelers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "2003, Steven A. Tretter, Communication system design using DSP algorithms:",
          "text": "The echo canceler is basically an adaptive tapped delay-line filter with near and far-end sections.",
          "type": "quote"
        }
      ],
      "form_of": [
        {
          "extra": "Something that, or someone who cancels something; specifically an electronic device that cancels a signal",
          "word": "cancel"
        }
      ],
      "glosses": [
        "agent noun of cancel: Something that, or someone who cancels something; specifically an electronic device that cancels a signal."
      ],
      "links": [
        [
          "cancel",
          "cancel#English"
        ],
        [
          "cancel",
          "cancel"
        ],
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          "electronic",
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        ],
        [
          "device",
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        ],
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          "signal",
          "signal"
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      "tags": [
        "agent",
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  "synonyms": [
    {
      "word": "canceller"
    }
  ],
  "word": "canceler"
}