Polydisperse

A collodial sol in which the particle sizes vary within wide limits.

polydisperse

polydisperse Relating to, characterized by, or characterized as particles of varied sizes in the dispersed phase of a disperse system.
Found on http://www.wordinfo.info/words/index/info/view_unit/1996/

polydisperse

When a polymer exists over a wide range of molecular masses; characteristic of man-made polymeric materials.
Found on http://www.chemistry-dictionary.com/definition/polydisperse.php
No exact match found