phrenicotomy

noun
phren·​i·​cot·​o·​my | \ ˌfren-i-ˈkät-ə-mē How to pronounce phrenicotomy (audio) \
plural phrenicotomies

Medical Definition of phrenicotomy

: surgical division of a phrenic nerve to secure collapse of a diseased lung by paralyzing the diaphragm on one side — compare phrenicectomy