Definition of Residue

(n.)
That which remains of a molecule after the removal of a portion of its constituents; hence, an atom or group regarded as a portion of a molecule; -- used as nearly equivalent to radical, but in a more general sense.
  

(n.)
That which remains after a part is taken, separated, removed, or designated; remnant; remainder.
  

(n.)
That part of a testeator's estate wwhich is not disposed of in his will by particular and special legacies and devises, and which remains after payment of debts and legacies.
  

(n.)
Any positive or negative number that differs from a given number by a multiple of a given modulus; thus, if 7 is the modulus, and 9 the given number, the numbers -5, 2, 16, 23, etc., are residues.
  

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residue
\res"i*due\ (r?z"?-d?), n. [f. résidu, l. residuum, fr. residuus that is left behind, remaining, fr. residere to remain behind. see reside, and cf. residuum.]
1. that which remains after a part is taken, separated, removed, or designated; remnant; remainder. the residue of them will i deliver to the sword. xv. 9. if church power had then prevailed over its victims, not a residue of english liberty would have been saved. taylor.
2. (law) that part of a testeator's estate wwhich is not disposed of in his will by particular and special legacies and devises, and which remains after payment of debts and legacies.
3. (chem.) that which remains of a molecule after the removal of a portion of its constituents; hence, an atom or group regarded as a portion of a molecule; -- used as nearly equivalent to radical, but in a more general sense.
note: the term radical is sometimes restricted to groups containing carbon, the term residue being applied to the others.
4. (theory of numbers) any positive or negative number that differs from a given number by a multiple of a given modulus; thus, if 7 is the modulus, and 9 the given number, the numbers -5, 2, 16, 23, etc., are residues.

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A remainder or surplus after a part has been separated or otherwise treated.

Rhelyw = n. a trail; a residue, the rest

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Noun
1. matter that remains after something has been removed
(hypernym) substance, matter
(hyponym) ash
2. something left after other parts have been taken away; "there was no remainder"; "he threw away the rest"; "he took what he wanted and I got the balance"
(synonym) remainder, balance, residual, residuum, rest
(hypernym) part, portion, component part, component
(hyponym) leftover, remnant

The hazardous material remaining in a packaging, including a tank car, after its contents have been unloaded to the maximum extent practicable and before the packaging is either refilled or cleaned of hazardous material and purged to remove any hazardous vapors. (49CFR171)

an amino acid in/from a protein (described as a component of the polypeptide chain).

A compound such as an amino acid or a nucleotide when it is part of a larger molecule.

The heavy, non-volatile components of crude oil that flow from the bottom of the fractionating column during fractional distillation.

Any organic matter left as residue, such as agricultural and forestry residue, including, but not limited to, conifer thinnings, dead and dying trees, commercial hardwood, noncommercial hardwoods and softwoods, chaparral, burn, mill, agricultural field, and industrial residues, and manure.

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The dry solids remaining after the evaporation of a sample of water or sludge.

materials remaining after processing, incineration, composting, or recycling have been completed; normally disposed of in landfills.