interparticle

adjective

in·​ter·​par·​ti·​cle ˌin-tər-ˈpär-ti-kəl 

: occurring between or involving two or more particles

interparticle forces

As the soil takes on water during rainstorm (or snowmelt), the interparticle spaces often fill up faster than the water can be drained from the soil.

—William A. Marsh

Word History

First Known Use

1946, in the meaning defined above