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Period may refer to:

Common meanings

Science and mathematics

  • Period (physics), the duration of time of one cycle in a repeating event
  • Orbital period, the time needed for one object to complete an orbit around another
  • Period (periodic table), a horizontal row of the periodic table
  • Period (gene), a gene in Drosophila involved in regulating circadian rhythm
  • Period (geology), a subdivision of geologic time
  • Periods (ring), members of the ring of numbers that can be expressed as integrals of algebraic differential forms over algebraically defined domains


Other uses

See also