noun

1. that which is left over after part is taken away; remainder; rest
2. Chem. the matter remaining at the end of a process, as after evaporation, combustion, filtration, etc.; residual product
3. Law that part of a testator's estate which is left after all claims, charges, and bequests have been satisfied

Etymology: ME < MFr residu < L residuum, neut. of residuus, remaining < residere: see reside