a small amount of something that remains after the main part has gone or been taken or used 残留物,剩余 ■(Law)the part of an estate that is left after the payment of charges, debts, and bequests (律)(扣除应付款项、债款、遗赠后的)剩余遗产,余产 ■a substance that remains after a process such as combustion or evaporation 残渣,剩余物
语源
late Middle English: from Old French residu, from Latin residuum 'something remaining' (see residuum)