Period
Period may refer to:
Common uses
[edit]- Period (punctuation)
- Era, length or span of time
- Periodization, classifying particular lengths of time into distinct historiographic or artistic periods
- List of time periods
- History by period
- Menstruation, commonly referred to as a "period"
Arts, entertainment, and media
[edit]- Period (music), concept in musical composition
- Periodic sentence or rhetorical period, concept in grammar and literary style
- Period drama, dramatic film or television production set in a historical period
- Period (Another American Lie), 1987 album by B.A.L.L.
- Period (Kesha album), 2025
- Period (mixtape), 2018 City Girls mixtape
- Period, novel in Dennis Cooper's George Miles cycle
- Periods., comedy film series
Mathematics
[edit]- In a repeating decimal, the length of the repetend
- Period of a function, length or duration after which a function repeats itself
- Period (algebraic geometry), numbers that can be expressed as integrals of algebraic differential forms over algebraically defined domains, forming a ring
Science
[edit]- Period (gene), gene in Drosophila involved in regulating circadian rhythm
- Period (periodic table), horizontal row of the periodic table
- "Period-" or "per-iod-", chemical prefix where "per" refers to oxidation state and "iod" refers to iodine
- Unit of time or timeframe
- Period (geology), subdivision of geologic time
- 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
- Rotation period, the time needed for one object to complete a revolution
- Wavelength, the spatial period of a periodic wave
- Sentence (linguistics), especially when discussing complex sentences in Latin syntax
Other uses
[edit]- Period (school), block of time allocated for a specific course or other purpose
- Playing period, a division of playing time in games and sport
- Accounting period, often shortened to "period" in business, an accounting timeframe analogous to a month
- Periodt, slang of period used as an interjection