This is the 327th most frequent Estonian word.
möödunud
"Passed" or "past."
Here, 'möödunud' functions as an adjective modifying 'aeg' (time), describing it as 'past' or 'elapsed'.
Möödunud aeg meenutab mulle nooruspõlve.
The past times remind me of my youth.
In this sentence, 'möödunud' is used as an adjective meaning 'last' or 'previous', indicating the time period before the current one.
Möödunud nädalal külastasin vanaema.
Last week, I visited my grandmother.
In this usage, 'möödunud' is a participle from the verb 'mööduma', employed here to convey the passage of time.