積せき率りつ相そう関かん係けい数すうMeaningsNoun1. product-moment correlation coefficientKanji used積pile up and accumulate率ratio相towards each other関connected to係be involved with数numberComposed of積せきproduct; volume; areaNoun率りつrate; ratio; proportion; percentageNoun相そう関かんcorrelation; interrelationNoun係けい数すうcoefficient; factor; proportional constant; modulusNoun