Residue is anything that's left over when a substance has been removed, like the grease left over on a frying pan. It can also mean, simply, "remainder."

When residue refers to a liquid, it’s what’s left at the bottom of a bottle, a pot, or a can after the rest has been poured out. Legally, the residue is the remainder of the money in an estate, after bills and taxes have been paid. So if your millionaire aunt leaves you her estate, but didn’t pay any bills for the last ten years, you may not get much residue!

Definitions of residue

n matter that remains after something has been removed

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crackling, greaves
the residue that remains after animal fat has been rendered
the residue that remains when something is burned
cotton cake, cottonseed cake
the solid matter remaining after oil has been pressed from cottonseeds
the residue of partially burnt tobacco left caked in the bowl of a pipe after smoking
fly ash
fine solid particles of ash that are carried into the air when fuel is combusted
bone ash
ash left when bones burn; high in calcium phosphate; used as fertilizer and in bone china
Type of:
that which has mass and occupies space

n something left after other parts have been taken away

balance, remainder, residual, residuum, rest
leftover, remnant
a small part or portion that remains after the main part no longer exists
Type of:
component, component part, constituent, part, portion
something determined in relation to something that includes it

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