Residue

Residue may refer to:

== Chemistry and biology == An amino acid, within a peptide chain Crop residue, materials left after agricultural processes Pesticide residue, refers to the pesticides that may remain on or in food after they are applied to food crops Petroleum residue, the heavier fractions of crude oil that fail to vaporize in an oil refinery Residue (chemistry), materials remaining after a physical separation process, or by-products of a chemical reaction