[ 'rɛzɪdju: ]
■ noun
1》 a small amount of something that remains after the main part has gone or been taken or used.
↘a substance that remains after a process such as combustion or evaporation.
2》 Law the part of an estate that is left after the payment of charges, debts, and bequests.
Origin
ME: from OFr. residu , from L. residuum (see residuum ).