A small amount of something that remains after the main part has gone or been taken or used. After the chemical reaction, a white residue was left at the bottom of the flask.
The part of an estate that is left after the payment of charges, debts, and bequests. The residue of the estate was divided equally among the heirs.
A substance that remains after a process such as combustion or evaporation. The residue from the burnt wood was collected and analyzed.
In complex analysis, the coefficient of the (1/(z − a)) term in the Laurent series expansion of a complex-valued function about a point a. By evaluating the contour integral, we found the residue of the function at z = 0.