/ Dictionary / Index R residue: Meaning and Definition of Find definitions for: res•i•due Pronunciation: (rez'i-d", -dy"), [key] — n. something that remains after a part is removed, disposed of, or used; remainder; rest; remnant. residuum (def. 2). an atom or group of atoms considered as a group or part of a molecule. that part remaining as a solid on a filter paper after a liquid passes through in the filtration procedure. the part of a testator's estate that remains after the payment of all debts, charges, special devises, and bequests. the coefficient of the term with exponent −1 in a Laurent series of a function of a complex variable. a number related to a given number by a congruence. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: residue (Thesaurus) residuary residuum Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language