intransitive verb-·at·ed, -·at·ing
to unite in one common substance or nature
Origin of consubstantiatefrom Ecclesiastical Late Latin consubstantiatus, past participle of consubstantiare from Classical Latin com-, with + substantia: see substance
tr. & intr.v.con·sub·stan·ti·at·ed, con·sub·stan·ti·at·ing, con·sub·stan·ti·ates
To unite or become united in one common substance, nature, or essence.