Monodisperse

A collection of objects are called monodisperse if they have the same size i.e. their size distribution is effectively a delta function. A sample of objects with a broader size distribution is called polydisperse. In practice, exactly monodisperse collections rarely exist. Often collections are comparatively described as "more monodisperse" or "less monodisperse", although "less polydisperse" and "more polydisperse" are the strictly correct usages. This is likely because polydispersity is often an undesired property in a collection of polymers.

== See also =
 * Polydispersity index