interventricular
adjective
in·ter·ven·tric·u·lar ˌin-tər-ven-ˈtri-kyə-lər 
-vən-
: situated or occurring between ventricles
the interventricular septum of the heart
interventricular brain hemorrhage
Word History
First Known Use
1827, in the meaning defined above
Medical Definition
interventricular
adjective
in·ter·ven·tric·u·lar ˌint-ər-ven-ˈtrik-yə-lər, -vən-
: situated between ventricles
an interventricular septal defect