Source : Webster's Revised Unabridged Dictionary (1913)

Consubstantiate \Con`sub*stan"ti*ate\ (?; 106), v. t. [imp. & p.
   p. {Consubstantiated}; p. pr. & vb. n. {Consubstantiating}.]
   To cause to unite, or to regard as united, in one common
   substance or nature. [R.]

         His soul must be consubstantiated with reason. --Jer.
                                                  Taylor.

Consubstantiate \Con`sub*stan"ti*ate\, v. i.
   To profess or belive the doctrine of consubstantion.

         The consubstantiating church and priest. --Dryden.

Consubstantiate \Con`sub*stan"ti*ate\, a.
   Partaking of the same substance; united; consubstantial.

         We must love her [the wife] that is thus
         consubstantiate with us.                 --Feltham.

Source : WordNet®

consubstantiate
     v 1: become united in substance; "thought and the object
          consubstantiate"
     2: unite in one common substance; "Thought is consubstantiated
        with the object"