Bidisperse is a term used to describe a mixture or solution that contains two different particle sizes. In scientific research, bidisperse materials are typically used to study the interactions between different types of particles. Synonyms for bidisperse include bimodal, two-component, and dual-size. Bimodal refers to a distribution of particle sizes that includes two distinct peaks, while two-component and dual-size both convey the idea of two distinct sizes present in the mixture. Other possible synonyms for bidisperse could include binary or dichotomous, as both terms suggest a division between two distinct groups or components within a larger system.