aeons
Geologic time spans
Aeons is the plural of aeon, a vast span of time—an age or era so long it defies ordinary measurement.
The word appears most often in the plural to emphasize immensity: The canyon was carved over aeons.
In geology and cosmology, an eon is a specific unit of deep time.
The spelling aeon is more common in British English; eon predominates in American usage.
Boundless temporal existence
- perpetuityInfinite continuation of time
- everlastingLasting for all time
- timelessnessFreedom from temporal decay
- infinityUnlimited extent or quantity
endless · unending · immemorial · ageless · forever · millennia · centuries · interminable
Distinct historical stretches
- erasNamed spans of history
- periodsSpans of time
- cretaceousLast Mesozoic period
- quaternaryFourth-order or four-bonded
strata · fossils · sediment · ages · millennia · formations · timescale · radiometric
Complete system or domain
- galaxiesGravitationally bound stellar assemblies
- cosmologyStudy of universal structure
- space-timeFused dimensional framework
- entropyQuantified chaos in systems
lightyears · redshift · expansion · singularity · origins · celestial · stellar · nebulae
eternity
Boundless temporal existence
- perpetuityInfinite continuation of time
- everlastingLasting for all time
- timelessnessFreedom from temporal decay
infinity · endless · unending · immemorial · ageless · forever · millennia · centuries · interminable · vast
epochs
Distinct historical stretches
- erasNamed spans of history
- periodsSpans of time
- cretaceousLast Mesozoic period
quaternary · strata · fossils · sediment · ages · millennia · formations · timescale · radiometric · dating
universe
Complete system or domain
- galaxiesGravitationally bound stellar assemblies
- cosmologyStudy of universal structure
- space-timeFused dimensional framework
entropy · lightyears · redshift · expansion · singularity · origins · celestial · stellar · nebulae · inflation
immortality
Exemption from death
primordial · genesis · eternal · divine · ancients · legends · mythology · pantheon · deities · timeless
- supernatural beingsghost, demon, phantom, specter, banshee
- Gnosticismgnosis, archons, demiurge, archon, Sophia
- Religious DualismGnosticism, Zoroastrianism, good and evil, light and darkness, Bogomilism
- mysticismmystic, gnosis, divine union, divine spark, mystical
- Neoplatonismemanation, nous, henosis, the Good, world soul
aeonsmoments
Short spans of time
instants · seconds · milliseconds · nanoseconds · split seconds
aeonsinstant
Briefest unit of time
flash · blink of an eye · heartbeat · breath · fleeting moment