Period
From Wikipedia, the free encyclopedia
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Period or periodic may refer to:
[edit] Language and literature
- Full stop, 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
[edit] Science and mathematics
- Menstruation, a phase of the menstrual cycle in which the uterine lining is shed
- Orbital period, a concept in astronomy
- Period (gene), a gene in Drosophila involved in regulating circadian rhythm
- Period (geology), a subdivision of geologic time
- Period (number), a concept in mathematics
- Period (periodic table), a horizontal row of the periodic table
- Periodic acid, an oxoacid of iodine
- In physics, period the reciprocal of frequency
[edit] Other meanings
- Period (music), a concept in musical composition
- Periodicity, the quality of occurring at regular intervals
- For historical period, see List of time periods
[edit] See also
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