Thayer's Greek Lexicon

 1. due measure
2. a measure of time, a larger or smaller portion of time, hence:
  1) a fixed and definite time, the time when things are
brought to crisis, the decisive epoch waited for
  2) opportune or seasonable time
  3) the right time
  4) a limited period of time
  5) to what time brings, the state of the times, the things
and events of time

For Synonyms see entry G5853