ventriculoatriostomy

noun
ven·​tric·​u·​lo·​atri·​os·​to·​my | \ -ˌā-trē-ˈäs-tə-mē How to pronounce ventriculoatriostomy (audio) \
plural ventriculoatriostomies

Medical Definition of ventriculoatriostomy

: surgical establishment of a shunt to drain cerebrospinal fluid (as in hydrocephalus) from a ventricle of the brain to the right atrium