1 noun sth that happenstarlú masc c m ueachtra fem4 c m uan everyday occurrencerud a tharlaíonn gach uile láit's a common occurrenceis minic a tharlaíonn sé2 noun MED, SCI presence or existencethe most common occurrence is in old peopleis ar sheandaoine is mó a thagann séthey prevented the occurrence of infectiond'éirigh leo ionfhabhtú a chosc3 noun STAT, COMP, LING instancetarlú masc c m u