actual cautery

[ăkchōō-əl]
n.
  1. An agent or process, such as electrocautery or a hot iron, that cauterizes tissue using heat and not a chemical means.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.