"overfilter" meaning in English

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  "etymology_text": "From over- + filter.",
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        "To subject to overfiltration."
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        [
          "overfiltration",
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  "word": "overfilter"
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          "text": "It is clear that overfilters and underfilters are dual in the sense of the duality principle.",
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        "A morphological filter (idempotent operator) whose image is a superset of the domain."
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        "(signal processing) A morphological filter (idempotent operator) whose image is a superset of the domain."
      ],
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        "To subject to overfiltration."
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        "(signal processing) A morphological filter (idempotent operator) whose image is a superset of the domain."
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