Time period, or an anagram of one?
I believe the answer is:
eon
(Other definitions for eon that I've seen before include "Geological period" , "Vast age; eternity" , "Major division of geological time" , "plenty of time" , "Very long age" .)
I believe the answer is:
eon
(Other definitions for eon that I've seen before include "Geological period" , "Vast age; eternity" , "Major division of geological time" , "plenty of time" , "Very long age" .)