|Origin:||attritio, from atterere 'to rub against', from ad- 'to' + terere 'to rub'|
at‧tri‧tion [uncountable] formal
the process of gradually destroying your enemy or making them weak by attacking them continuously:
2 especially American English
when people leave a company or course of study and are not replaced:
Staff reductions could be achieved through attrition and early retirements.