dictionary.ptdiurnaladjectivegeneral usecommon/diˈuɾnu/di·ur·noPortuguêsEnglishEspañolFrançaisDefinition1Relating to the day; occurring or active during daylight hours.Usage examples“Most butterflies are diurnal insects.”“The diurnal shift at the factory runs from 7 am to 3 pm.”SynonymsdaytimeAntonymsnocturnalCommon combinationsdiurnal animaldiurnal activitydiurnal cycle
Relating to the day; occurring or active during daylight hours.Usage examples“Most butterflies are diurnal insects.”“The diurnal shift at the factory runs from 7 am to 3 pm.”SynonymsdaytimeAntonymsnocturnalCommon combinationsdiurnal animaldiurnal activitydiurnal cycle