Definition of portosystemic in English:
portosystemic
(also portasystemic)
adjective ˌpɔːtə(ʊ)sɪˈstiːmɪkˌpɔːtə(ʊ)sɪˈstɛmɪk
Medicine Of, relating to, or connecting the portal and systemic venous systems.
Origin
1930s; earliest use found in American Journal of Surgery. From port- + -o- + systemic.