The term Depth may refer to: Depth (ring theory), an important invariant of rings and modules in commutative and homological algebra Depth-first search, a search algorithm Depth gauge, a pressure gauge that displays the equivalent depth in water Depth in a well, the measurement between two points in an oil well Depth-limited search, a search algorithm Depth perception, 3d shapes Color depth or number of bits used determining the range of colors supported by computer graphics Depth of moral cha… (More on Depth)