Residuum
Pronunciation : Re*sid"u*um (-m)
Part of Speech : n.
Etymology : [L. See Residue.]
Definition : Defn: That which is left after any process of separation or purification; that which remains after certain specified deductions are made; residue. "I think so," is the whole residuum . . . after evaporating the prodigious pretensions of the zealot demagogue. L. Taylor.
Source : Webster's Unabridged Dictionary, 1913