Percolations refer to the process of filtering a substance through a porous material. Synonyms for this word include filtrations, seepages, drips, and strains. Other words that can be used to refer to this process include infiltration, absorption, and osmosis. Permeation, transpiration, bleeding, and leaching are also possible synonyms. In science, the term diffusion is sometimes used to describe percolations. Some synonyms that are more informal in nature include leaks, trickles, and ooze. Whatever term is used, percolations are an important process in a variety of industrial and scientific applications ranging from coffee brewing to drug purification.