ˌ ̷ ̷ ̷ ̷ˈtāshən noun
( -s )
Etymology: Latin coarctation-, coarctatio, from coarctatus + -ion-, -io -ion
1. obsolete : confinement to a narrow space : compression , restriction
2. : a stricture or narrowing (as of a vessel or canal, especially the aorta)