aevum means the temporal mode of existence between time and eternity, said to be experienced by angels, saints, and celestial bodies (which medieval astronomy believed to be unchanging). Lexicurio rates it Sui generis — a strength score of 87 out of 100.
aevum is pronounced /ˈiːvəm/.
Why “aevum” is a great word
AEVUM — [Noun] In medieval philosophy, the temporal mode of existence between time and eternity, attributed to angels, saints, and celestial bodies. Learned borrowing from Latin aevum ("age, lifetime, eternity"). Unlike tempus, which denotes the measurable, sequential flux of earthly change, or aeternitas, which signifies absolute, timeless stasis without origin, aevum is a participated duration with a beginning but no end. It is the silent turning of a star outside creation, the unaging vigilance of a seraph, and the perpetual now of a soul in grace—a borderland where the moving image touches the unmoving light.
Etymology
Learned borrowing from Latin aevum (“temporal mode of existence between time and eternity”). Doublet of aeviternity and aye.
noun
- The temporal mode of existence between time and eternity, said to be experienced by angels, saints, and celestial bodies (which medieval astronomy believed to be unchanging).