Period
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Period (from Greek περίοδος) 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
- Period piece describes creative works set in a particular era.
[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
- The period of a periodic function
- Periodic group in group theory
- Period (number), a concept in mathematics
- 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
[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
| 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. |

