noun, plural com·mis·sur·ot·o·mies. Surgery.
the incision of a band of commissures, especially of mitral fibers, to correct mitral stenosis.
Origin of commissurotomy
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Surgical division of a commissure, fibrous band, or ring.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.