Effossion n. : A digging out or up.

Example:


Taxonomy
molecules, gases, molecular weight, hole, free encyclopedia, effuse, Graham's Law of Effusion, speed, balloon, Physical chemistry, search, collisions, diameter, dependent, specific heat, kinetic energy, vrms, equation.

Defination from the web:
Effusion. From Wikipedia, the free encyclopedia. Jump to: navigation, search. For other uses, see Effusion (disambiguation). In chemistry, effusion is the process in which individual molecules flow through a hole without collisions between molecules. ...