biomat

== English == === Etymology === From bio- +‎ mat. === Noun === biomat (plural biomats) (subsoil hydraulics) A clogging layer of typically densely packed decaying organic matter which impedes the downward flow of water. A restrictive layer that develops beneath the distribution lines of the soil absorption system of septic tanks at the gravel-soil or bed-soil interface. === Anagrams === aimbot