Jijin jijiyar jijiyoyi kalma ce da ake amfani da ita a cikin jiki don kwatanta jijiya da ke tafiya tare da jijiyar iliac (mafi girman ɓangaren ƙashin ƙashin ƙugu) kuma ya zama wani ɓangare na tsarin jijiyoyi a cikin yankin ƙashin ƙugu. Kalmar "circumflex" tana nufin "lankwashewa" ko "curving", yayin da "iliac" yana nufin kashin ilia, kuma "jijiya" yana nufin magudanar jini da ke mayar da jini zuwa zuciya.