'irregularly-distributed' originates from the combination of 'irregularly' and 'distributed'. 'Irregularly' comes from Latin 'irregularis', where 'in-' meant 'not' and 'regularis' meant 'rule'. 'Distributed' comes from Latin 'distribuere', where 'dis-' meant 'apart' and 'tribuere' meant 'to assign'.

'Irregularly' changed from the Latin word 'irregularis' and 'distributed' from 'distribuere', eventually forming the modern English term 'irregularly-distributed'.

Initially, 'irregularly' meant 'not following a rule', and 'distributed' meant 'to assign apart'. Over time, it evolved to describe something not evenly spread.