consubstantial
Concise Oxford English Dictionary © 2008 Oxford University Press:
consubstantial/kɒnsəbˈstanʃ(ə)l/
▶adjective (especially of the three persons of the Trinity in Christian theology) of the same substance.
– derivatives
consubstantiality noun.
consubstantiality noun.
– origin ME: from eccles. L. consubstantialis (translating Gk homoousios ‘of one substance’), from con- ‘with’ + substantialis (see substantial).
'consubstantial' also found in these Oxford entries:

