Period

Period has different meanings.

• Period (punctuation), a punctuation mark, also called a full stop
• Period (female menstruation)
• Period (geology), a series of rock strata, and the time during which the rocks were laid down
• The time it takes to finish one sequence of something that happens again and again
  • Orbital period
• Periodic function
• The time it takes to play ¹⁄₃ of an ice hockey game
• A row in the periodic table