correlation
cor.re.la.tion \.ko.r-*-'la--sh*n, .ka:r-\ \-shn*l, -sh*n-*l\ n [ML correlations-, correlatio, fr. L com- + relation-,]relatio relation 1: the act of correlating : the state of being correlated; specif :: a relation of invariable accompaniment 2: reciprocal relation in the occurrence of different structure, characteri stics, or processes in organisms - cor.re.la.tion.al aj