perikinetic
/ˌpɛrɪkɪˈnɛtɪk/ /ˌpɛrɪkʌɪˈnɛtɪk/Physical Chemical
adjective
Designating coagulation, aggregation, or flocculation of colloidal particles occurring as a result of Brownian motion.
Origin
1920s; earliest use found in Chemical Abstracts. From peri- + kinetic, after German perikinetisch.