Meaning of dispersant

dis•per•sant

Pronunciation: (di-spûr'sunt), [key]
— n.
  1. something that disperses.
  2. any admixture to a dispersion capable of maintaining the dispersed particles in suspension.
—adj.
  1. acting as a dispersant.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.