noun, plural electrocauteries. Medicine/Medical.
a hand-held, needlelike cautery heated by an electric current.
Also, electrocauterization. the process of cutting and cauterizing skin simultaneously, or coagulating blood from vessels around a surgical incision, by means of an electrocautery.

1880–85; electro- + cautery

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World English Dictionary
electrocautery (ɪˌlɛktrəʊˈkɔːtərɪ)
vet science the use of an electrically heated metal instrument for cautery

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American Heritage
Medical Dictionary

electrocautery e·lec·tro·cau·ter·y (ĭ-lěk'trō-kô'tə-rē)

  1. An instrument for directing a high-frequency current through a local area of tissue.

  2. A metal cauterizing instrument heated by electricity.

  3. The cauterization of tissue by means of one of these instruments.

The American Heritage® Stedman's Medical Dictionary
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