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We found one dictionary with English definitions that includes the word historic periods:
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General (1 matching dictionary)

1. historic periods: Vocabulary.com [home, info]

(Note: See historic_period for more definitions.)

Quick definitions from WordNet (historic period) ▸ noun:  an era of history having some distinctive feature ▸ noun:  a stage in the history of a culture having a definable place in space and time ▸ Also see historic_period ▸ Words similar to historic periods ▸ Usage examples for historic periods ▸ Words that often appear near historic periods ▸ Rhymes of historic periods ▸ Invented words related to historic periods