medullectomy

noun
med·​ul·​lec·​to·​my | \ ˌmed-ᵊl-ˈek-tə-mē How to pronounce medullectomy (audio) , ˌmej-ə-ˈlek- How to pronounce medullectomy (audio) \
plural medullectomies

Medical Definition of medullectomy

: surgical excision of a medulla (as of the adrenal glands)