WordReference Random House Unabridged Dictionary of American English © 2026
dis•per•sant
(di spûr′sənt),USA pronunciation n.
adj.
- something that disperses.
- Chemistry[Physical Chem.]any admixture to a dispersion capable of maintaining the dispersed particles in suspension.
adj.
- Chemistryacting as a dispersant.
- disperse + -ant 1940–45