The Collaborative International Dictionary of English v.0.48:

Consubstantiate \Con`sub*stan"ti*ate\, a.
   Partaking of the same substance; united; consubstantial.
   [1913 Webster]

         We must love her [the wife] that is thus
         consubstantiate with us.                 --Feltham.
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The Collaborative International Dictionary of English v.0.48:

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.]
   [1913 Webster]

         His soul must be consubstantiated with reason. --Jer.
                                                  Taylor.
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The Collaborative International Dictionary of English v.0.48:

Consubstantiate \Con`sub*stan"ti*ate\, v. i.
   To profess or belive the doctrine of consubstantion.
   [1913 Webster]

         The consubstantiating church and priest. --Dryden.
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WordNet (r) 3.0 (2006):

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