An Etymological Dictionary of Astronomy and Astrophysics
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Composed of, or arranged in, laminae, sheets.

→ lamina + → -ar.

In a fluid flow, layer next to a fixed boundary. The fluid velocity is zero at the boundary but the molecular viscous stress is large because the velocity gradient normal to the wall is large. → turbulent boundary layer.

→ laminar; → boundary; → layer.

A flow in which the particles of fluid are moving orderly, and in which adjacent layers or laminas glide smoothly over another with little mixing between them. A laminar flow may rapidly transform into a → turbulent flow for large → Reynolds numbers.

→ laminar; → flow.

A layer in which the fluid undergoes smooth, nonturbulent flow. It is found between any surface and a turbulent layer above.

→ laminar; sublayer, from → sub- + → layer.