Definition of polydisperse in US English:

polydisperse

adjective

Chemistry
  • Existing in the form of or containing colloidal particles having a range of sizes; especially designating macromolecular substances in which there is a simple distribution of particle size with one peak; relating to such a distribution.

Origin

Early 20th century; earliest use found in Martin Fischer (b. 1879). From German polydispers from poly- + dispers.

Pronunciation

polydisperse

/ˌpɒlɪdɪˈspəːs/