Period 37650 223533949 2008-07-04T14:15:07Z Fieldday-sunday 6803532 Reverted edits by [[Special:Contributions/72.79.178.67|72.79.178.67]] to last version by Slakr (using [[WP:HG|Huggle]]) {{wiktionarypar|period|periodic}} {{TOCright}} '''Period''' or '''periodic''' may refer to: ==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#George Miles cycle|Dennis Cooper's George Miles cycle]] of novels ==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]] ==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]] ==See also== * [[Periodization]] {{disambig}} [[af:Periode]] [[be-x-old:Пэрыяд]] [[cs:Perioda]] [[da:Periode]] [[de:Periode]] [[es:Período]] [[fr:Période]] [[gl:Período]] [[ko:주기]] [[id:Periode]] [[it:Periodo]] [[lb:Period]] [[lt:Periodas]] [[nl:Periode]] [[ja:ピリオド]] [[no:Periode]] [[nds:Periood]] [[pl:Okres]] [[pt:Período]] [[ru:Период]] [[simple:Period]] [[sk:Perióda]] [[fi:Jakso]] [[sv:Period]] [[uk:Період]]