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.