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- DictionaryPe·ri·od/ˈpirēəd/
noun
- 1. a length or portion of time: "he had long periods of depression"
- 2. the interval of time between successive occurrences of the same state in an oscillatory or cyclic phenomenon, such as a mechanical vibration, an alternating current, a variable star, or an electromagnetic wave.
adjective
- 1. belonging to or characteristic of a past historical time, especially in style or design: "a splendid selection of period furniture"