The Collaborative International Dictionary of English v.0.48:

Correlate \Cor`re*late"\ (k[o^]r`r[-e]*l[=a]t" or
   k[o^]r"r[-e]*l[=a]t`), v. i. [imp. & p. p. Correlated; p.
   pr. & vb. n. Correlating.] [Pref. cor- + relate.]
   To have reciprocal or mutual relations; to be mutually
   related.
   [1913 Webster]

         Doctrine and worship correlate as theory and practice.
                                                  --Tylor.
   [1913 Webster]