a. (and sb.). [Partly f. L. co-ætern-us, or a. F. coéternel; partly f. CO- 2 + ETERNAL.] A. adj. Equally eternal; existing with another eternally.
1398. Trevisa, Barth. De P. R., I. (1495), 7. The sone is without begynnyng: coeternal to his fader . and to the holy ghost.
1549. (Mar.) Bk. Com. Prayer, 6. The glorye equall, the maiestie coeternall.
1667. Milton, P. L., III. 2. Hail holy light, ofspring of Heavn first-born, Or of th Eternal Coeternal beam.
1713. Berkeley, Hylas & Phil., III. Philosophers have thought Matter co-eternal with the Deity.
1801. G. S. Faber, Horæ Mosaicæ, II. 315. The co-eternal, co-equal, Word of God is alone found both willing and capable.
B. sb. One equally eternal with another.
1610. Healey, St. Aug. Citie of God, 435. The Angels are placed in the high heavens, not as coeternals with God.