相そう補ほ演えん算ざんMeaningsNoun1. complementary operationKanji used相towards each other補supplementary演performance算calculateComposed of相そうaspect; appearance; look; physiognomy (as an indication of one's fortune); phase (e.g. solid, liquid and gaseous)Noun補ほassistant ...; probationary ...Suffix演えん算ざんoperation; calculationNoun