a handheld, needlelike cautery heated by an electric current.
Also e·lec·tro·cau·ter·i·za·tion. the process of cutting and cauterizing skin simultaneously, or coagulating blood from vessels around a surgical incision, by means of an electrocautery.
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British Dictionary definitions for electrocautery
vet science the use of an electrically heated metal instrument for cautery
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012