Glossary of Karst and Cave Terms
Based on "A Lexicon of Cave and Karst Terminology with Special to Environmental Karst Hydrology" EPA/600/R-02/003, 2002, EPA: Washington, DC., Speleogenesis Glossary includes 2699 cave & karst terms
1. A measure of the spreading of a flowing substance due to the nature of the porous medium, with its interconnected channels distributed at random in all directions . 2. The sum of the coefficients of mechanical dispersion and molecular diffusion in a porous medium .