'periodically-dispatched' originates from the combination of 'periodically' and 'dispatched'. 'Periodically' comes from the Greek word 'periodikos', meaning 'recurring at intervals', and 'dispatched' comes from the Italian word 'dispacciare', meaning 'to send off'.

'Periodically' evolved from the Greek 'periodikos' through Latin 'periodicus', while 'dispatched' evolved from the Italian 'dispacciare' through French 'despecher'.

Initially, 'periodically' meant 'recurring at intervals', and 'dispatched' meant 'to send off'. The combined term retains these meanings, indicating something sent at regular intervals.