The Clue
Long, long time period (3 letter answer)
The Answer
EON
Tags
Notes
The answer EON is very common and appears about once every 42 puzzles.
Related Clues
Eternity
Gigayear
Ages and ages
Almost forever
Astronomical stretch
Big time
Billion years
Forever and a day
Geological division
Immeasurable period
Kalpa, to a Hindu
Long period
Long time
Loooong wait
Many eras
Many lifetimes
Many moons
Time division
Time on end
Time period
Time unit
Years and years
Ages upon ages
Forever, or close to it
Great time expanse
Incomprehensible time span
Long, long time
Long stretch of time
Longest time division
Many, many moons
Millennium upon millennium
Periods upon periods
Time out of mind
Very long time
Many a doctor's office wait, seemingly
Definition
EON as a noun:
1. (eon, aeon) = the longest division of geological time
2. (eon, aeon) = an immeasurably long period of time; "oh, that happened eons ago"
3. (eon, aeon) = (Gnosticism) a divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe