The leakage of fluid between the plunger and the bore of a pump piston. Also known as slippage loss.

The movement of gas past or through a liquid-phase reservoir front; this movement occurs instead of driving the liquid forward; it can exist in gas-drive reservoirs or in gas-lift oil-well bores.

A fabric defect on which warp threads slip over filling threads or vice versa as a result of loose weaving or of unevenly matched yarns.