What is another word for diffusion coefficient?
Pronunciation: [dɪfjˈuːʒən kˌə͡ʊɪfˈɪʃənt] (IPA) 
The term "diffusion coefficient" refers to the measure of the speed at which particles spread and move through a certain medium or material. It can also be considered the extent to which a substance diffuses. There are a few synonyms that can be used to substitute this term, such as diffusion rate, permeation coefficient, effusion coefficient, or even just diffusion. All of these terms describe the same concept of how quickly molecules or particles move through a certain substance. The diffusion coefficient is an important concept in various scientific fields, including biology, chemistry, and physics, as it helps understand how substances behave, move, and interact in certain environments.
