1000 year spans (9)
I believe the answer is:
millennia
(Other definitions for millennia that I've seen before include "ages" , "protracted periods" , "Could seem an interminable time" , "Thousands of years" , "Periods of 1000 years" .)
I believe the answer is:
millennia
(Other definitions for millennia that I've seen before include "ages" , "protracted periods" , "Could seem an interminable time" , "Thousands of years" , "Periods of 1000 years" .)