Laminar-flow definitions

Nonturbulent flow of a viscous fluid in layers near a boundary, as that of lubricating oil in bearings.

The regular, continuous, smooth movement of a fluid.

Smooth, orderly movement of a fluid, in which there is no turbulence, and any given subcurrent moves more or less in parallel with any other nearby subcurrent. Laminar flow is common in viscous fluids, especially those moving at low velocities.