periodnounmasculine/peˈɾi.odu/mediumpe·rí·o·doPortuguesEnglishEspanolFrancaisDefinitionA length of time with a defined beginning and end.The holiday period starts next week.We are in a transition period.synintervalphaseCommon collocationstime periodacademic periodEtymologyDo grego 'periodos'Related wordsperiódicoperiódica