Substrate

Substrate may refer to:

==Physical layers== Substrate (biology), the natural environment in which an organism lives, or the surface or medium on which an organism grows or is attached Substrate (aquatic environment), the earthy material that exists in the bottom of an aquatic habitat, like dirt, rocks, sand, or gravel Substrate (vivarium), the material used in the bottom of a vivarium or terrarium Substrate (aquarium), the material used in the bottom of an aquarium Substrate (building), natural stone, masonry surface, ceramic and porcelain tiles Substrate (chemistry), the reactant which is consumed during a catalytic or enzymatic reaction Substrate (materials science), the material on which a process is conducted Substrate (printing), the base material that images will be printed onto Printed circuit board (PCB), or more specifically, the electrically insulating portion of a PCB structure, such as fiberglass bound together with epoxy cement Substrate (geology), a stratum on which another geologic stratum lies Wafer (electronics), sometimes called a substrate for deposition or growth processes