noun
: the average distance traversed between collisions by particles (as molecules of a gas or free electrons in metal) in a system of agitated particles — called also free path
noun
: the average distance traversed between collisions by particles (as molecules of a gas or free electrons in metal) in a system of agitated particles — called also free path
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012