[f. prec. + -ITY.] Coessential quality or nature. (Theol.)
1673. Milton, True Relig., Wks. (1851), 410. As for terms of Triunity, Co-essentiality, Tripersonality, and the like, they reject them as Scholastic Notions.
1790. Burgess, Divinity of Christ, 41 (T.). The appellation of the Son of God implies coessentiality with God.
18823. Schaff, Relig. Encycl., II. 992/2. The co-essentiality of the Son.