1. lengths of time with particular characteristics or during which particular events occur
2. punctuation marks (.) used to end sentences
3. scheduled times for classes in school
Usage: educational

Examples

• The Renaissance was one of the most important periods in European history.
• During busy periods at work, she often stayed late.
• Remember to put periods at the end of your sentences.
• I have math class during third and fourth periods.
• The museum displays artifacts from different historical periods.
• She missed school because of severe cramps during her period.