Period Information

Period

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Contents 1 Science 2 Language and literature 3 History 4 Medical 5 Mathematics 6 Academics 7 Other meanings 8 See also

Period (from Greek περίοδος) or periodic may refer to:

Science

• Orbital period, a concept in astronomy.
• Period (gene), a gene in Drosophila involved in regulating circadian rhythm
• Period (geology), a subdivision of geologic time
• Periodic function and periodical, a function that repeats its values in regular intervals
• Periodic group in group theory
• Periodic table, a chart which lists all currently known chemical elements

• Period (periodic table), a horizontal row of the periodic table

• Periodic acid, an oxoacid of iodine
• Period (physics), the reciprocal of frequency
• Period of orbit
• Period of time

Language and literature

• Period, a punctuation mark indicating the end of a sentence or phrase
• Periodic sentence, a sentence that is not grammatically complete until its end
• The final book in Dennis Cooper's George Miles cycle of novels

History

• Pisano period
• Period piece describes creative works set in a particular era.

Medical

• Menstruation, a phase of the menstrual cycle in which the uterine lining is shed

Mathematics

• The period of a periodic function
• Ring of periods

Academics

• Period (school), a class period in schools

Other meanings

• Period (music), a concept in musical composition
• Periodicity, the quality of occurring at regular intervals or periods
• Periods in ice hockey, intervals into which a match is divided

See also

• Periodization
• Full stop (disambiguation)

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.

 

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