Residue

Residue may refer to:

In science and technology:

• Residue (chemistry), material remaining after a distillation or an evaporation, or portion of a larger molecule
  • In particular, in biology, often refers specifically to an amino acid
• The heavier fractions of crude oil that fail to vaporize in an oil refinery
• Crop residue, materials left after agricultural processes
• Pesticide residue

In mathematics:

• Residue (complex analysis), complex number describing the behavior of line integrals of a meromorphic function around a singularity
• Residue (partial fraction decomposition), the numerator of the expanded terms
• The remainder in modular arithmetic

Residue may also be:

• A variant title of a British folk song also known as Levy-Dew and New Year Carol.
• Residue (law), portion of the testator's estate that is not specifically devised to someone in the will
• residual value