Crossword clues for Down periods 8 letters:PERIODIC__ table (chart of chemical elements)PERIODICEvery-once-in-a-whilePERIODICTable that hangs in many classroomsPERIODICTable in chemistry classPERIODICRegularPERIODICLike Mendeleev's tablePERIODICAt fixed intervalsPERIODICOn a regular basisPERIODICLike magazine mailingsPERIODICFrom time to time.PERIODICCyclicalPERIODICRecurrent.PERIODICLike a certain tablePERIODICKind of tablePERIODIC___ table (chemistry class topic)PERIODICTable for chemists?PERIODICIntermittentMEALTIMEPeriodic table period?OVERTIMEExtended work periodSEASONALAvailable periodicallySPACEAGEPeriod that started with SputnikCOLDSNAPPeriod of frigid temperaturesDOWNTIME*Period after a crash, perhapsELEMENTSPeriodic table itemsELEMENTSPeriodic-table entriesLEADTIMEPreparation periodSESSIONSTraining periodsSILURIANPeriod in which early invertebrate land animals appearedSPACEAGEPeriod that began with Sputnik I's launchMAGRITTEArtist that had a "Renoir period" (no, it wasn't Renoir)LASTYEARDuring the prior annual periodJURASSICPeriod when birds and mammals appearedOLYMPIADCertain four-year periodDARKAGESPeriod before the RenaissanceELLIPSISOmission periods?OVERTIMETie-breaking periodSOLARDAYAstronomical time periodELEMENTSPeriodic table membersHELLWEEKCollege hazing periodBADMOODSPeriod pieces?DARKAGESNow-disfavored term for the Medieval periodCATFANCYAilurophile's periodicalLIFETIMELengthy guarantee periodOBAMAERAPeriod when the Clean Power Plan went into effectFLAREUPSPeriodic outburstsSLEEPILYHow a high school student might pass through first periodCRUMHORNRenaissance period wind instrument with an upward curving endDOWNTIMEUnproductive periodDEVONIANPeriod in which amphibians and insects appearedJURASSICMiddle period of the Age of Dinosaurs
